diff --git a/src/app/convert/controllers/ConvertThumbnailController.php b/src/app/convert/controllers/ConvertThumbnailController.php
index 03c4dde163692c007c2240249b984371b4046281..f0e2664848e0ca903b97526048bd1d588bf91796 100755
--- a/src/app/convert/controllers/ConvertThumbnailController.php
+++ b/src/app/convert/controllers/ConvertThumbnailController.php
@@ -62,15 +62,9 @@ class ConvertThumbnailController
         $filename = pathinfo($pathToDocument, PATHINFO_FILENAME);
         $tmpPath = CoreConfigModel::getTmpPath();
 
-        if (!empty($args['configPath'])) {
-            $configPath = $args['configPath'];
-        } else {
-            $configPath = CoreConfigModel::getConfigPath();
-        }
-
-        $overrideFile = "{$configPath}/override/setasign/fpdi_pdf-parser/src/autoload.php";
-        if (file_exists($overrideFile)) {
-            require_once($overrideFile);
+        $libPath = CoreConfigModel::getFpdiPdfParserLibrary();
+        if (file_exists($libPath)) {
+            require_once($libPath);
         }
         $pdf = new Fpdi('P', 'pt');
         $pageCount = $pdf->setSourceFile($pathToDocument);
@@ -147,15 +141,9 @@ class ConvertThumbnailController
             return ['errors' => 'Document not found on docserver or not readable'];
         }
 
-        if (!empty($args['configPath'])) {
-            $configPath = $args['configPath'];
-        } else {
-            $configPath = CoreConfigModel::getConfigPath();
-        }
-
-        $overrideFile = "{$configPath}/override/setasign/fpdi_pdf-parser/src/autoload.php";
-        if (file_exists($overrideFile)) {
-            require_once($overrideFile);
+        $libPath = CoreConfigModel::getFpdiPdfParserLibrary();
+        if (file_exists($libPath)) {
+            require_once($libPath);
         }
         $pdf = new Fpdi('P', 'pt');
         $pageCount = $pdf->setSourceFile($pathToDocument);
diff --git a/src/app/convert/scripts/ThumbnailScript.php b/src/app/convert/scripts/ThumbnailScript.php
index fad78959cb41128b094199b0f47fc6dabae02cd1..fe9b0a22da4a130abefb2b92f347ffad0964590a 100644
--- a/src/app/convert/scripts/ThumbnailScript.php
+++ b/src/app/convert/scripts/ThumbnailScript.php
@@ -46,9 +46,9 @@ class ThumbnailScript
         ]);
 
         if (isset($args['page'])) {
-            $isConverted = ConvertThumbnailController::convertOnePage(['configPath' => $args['configPath'], 'id' => $args['id'], 'type' => $args['type'], 'page' => $args['page']]);
+            $isConverted = ConvertThumbnailController::convertOnePage(['id' => $args['id'], 'type' => $args['type'], 'page' => $args['page']]);
         } else {
-            $isConverted = ConvertThumbnailController::convert(['configPath' => $args['configPath'], 'id' => $args['id'], 'type' => $args['type']]);
+            $isConverted = ConvertThumbnailController::convert(['id' => $args['id'], 'type' => $args['type']]);
         }
         if (!empty($isConverted['errors'])) {
             DocumentModel::update([
diff --git a/src/app/document/controllers/DigitalSignatureController.php b/src/app/document/controllers/DigitalSignatureController.php
index 41259284f05cca03267f4816512b099907a7a632..7ed3bfe14a718a3a1e41daa474af445145d17b31 100755
--- a/src/app/document/controllers/DigitalSignatureController.php
+++ b/src/app/document/controllers/DigitalSignatureController.php
@@ -183,9 +183,9 @@ class DigitalSignatureController
             return ['errors' => 'Document not found on docserver or not readable'];
         }
 
-        $libDir = CoreConfigModel::getLibrariesDirectory();
-        if (!empty($libDir) && is_file($libDir . 'SetaPDF-Signer/library/SetaPDF/Autoload.php')) {
-            require_once($libDir . 'SetaPDF-Signer/library/SetaPDF/Autoload.php');
+        $libPath = CoreConfigModel::getSetaPdfSignerLibrary();
+        if (!empty($libPath) && is_file($libPath)) {
+            require_once($libPath);
 
             $tmpPath            = CoreConfigModel::getTmpPath();
             $signedDocumentPath = $tmpPath . $GLOBALS['id'] . '_' . rand() . '_signedDocument.pdf';
@@ -327,9 +327,9 @@ class DigitalSignatureController
 
     public static function timestampHashes($args = [])
     {
-        $libDir = CoreConfigModel::getLibrariesDirectory();
-        if (!empty($libDir) && is_file($libDir . 'SetaPDF-Signer/library/SetaPDF/Autoload.php')) {
-            require_once($libDir . 'SetaPDF-Signer/library/SetaPDF/Autoload.php');
+        $libPath = CoreConfigModel::getSetaPdfSignerLibrary();
+        if (!empty($libPath) && is_file($libPath)) {
+            require_once($libPath);
 
             $tmpPath            = CoreConfigModel::getTmpPath();
             $signedDocumentPath = $tmpPath . $GLOBALS['id'] . '_' . rand() . '_tsDocument.pdf';
diff --git a/src/app/document/controllers/DocumentController.php b/src/app/document/controllers/DocumentController.php
index c61799e38735195f915ba0481b99881bd3f37d14..d10f865ee7cc6b15b539c3a07c1794c2ea72e890 100644
--- a/src/app/document/controllers/DocumentController.php
+++ b/src/app/document/controllers/DocumentController.php
@@ -539,10 +539,10 @@ class DocumentController
         }
 
 
-        $libDir    = CoreConfigModel::getLibrariesDirectory();
+        $libPath    = CoreConfigModel::getSetaPdfSignerLibrary();
         $loadedJson = CoreConfigModel::getConfig();
         if (($loadedJson['docaposteSignature']['enable'] || $loadedJson['metaSignSignature']['enable']) && 
-            ($hasEidas || $hasMetaSignSignature) && (empty($libDir) || !is_file($libDir . 'SetaPDF-Signer/library/SetaPDF/Autoload.php'))) {
+            ($hasEidas || $hasMetaSignSignature) && (empty($libPath) || !is_file($libPath))) {
             return $response->withStatus(500)->withJson(['errors' => 'SetaPDF-Signer library is not installed', 'lang' => 'setAPdfSignerError']);
         }
 
@@ -565,9 +565,9 @@ class DocumentController
             return $response->withStatus(400)->withJson(['errors' => 'Document is not a pdf']);
         }
 
-
-        if (!empty($libDir) && is_file($libDir . 'SetaPDF-FormFiller-Full/library/SetaPDF/Autoload.php')) {
-            require_once($libDir . 'SetaPDF-FormFiller-Full/library/SetaPDF/Autoload.php');
+        $libPath = CoreConfigModel::getSetaPdfFormFillerLibrary();
+        if (!empty($libPath) && is_file($libPath)) {
+            require_once($libPath);
 
             $targetFile = CoreConfigModel::getTmpPath() . "tmp_file_{$GLOBALS['id']}_" .rand(). "_target_watermark.pdf";
             $flattenedFile = CoreConfigModel::getTmpPath() . "tmp_file_{$GLOBALS['id']}_" .rand(). "_watermark.pdf";
@@ -680,10 +680,9 @@ class DocumentController
             ]);
 
             $firstWorkflowId = null;
-            $configPath = CoreConfigModel::getConfigPath();
-            $overrideFile = "{$configPath}/override/setasign/fpdi_pdf-parser/src/autoload.php";
-            if (file_exists($overrideFile)) {
-                require_once($overrideFile);
+            $libPath = CoreConfigModel::getFpdiPdfParserLibrary();
+            if (file_exists($libPath)) {
+                require_once($libPath);
             }
             $pdf = new Fpdi('P', 'pt');
             $veryTemporaryPath = CoreConfigModel::getTmpPath() . "tmp_file_{$GLOBALS['id']}_" .rand(). "_coord.pdf";
@@ -850,15 +849,15 @@ class DocumentController
         }
 
 
-        $libDir    = CoreConfigModel::getLibrariesDirectory();
+        $libPath    = CoreConfigModel::getSetaPdfSignerLibrary();
         $loadedJson = CoreConfigModel::getConfig();
-        $tmpPath   = CoreConfigModel::getTmpPath();
+        $tmpPath    = CoreConfigModel::getTmpPath();
 
         if ($workflow['mode'] == 'sign' && $workflow['signature_mode'] != 'stamp') {
-            if (empty($libDir) || !is_file($libDir . 'SetaPDF-Signer/library/SetaPDF/Autoload.php')) {
+            if (empty($libPath) || !is_file($libPath)) {
                 return $response->withStatus(500)->withJson(['errors' => 'SetaPDF-Signer library is not installed', 'lang' => 'setAPdfSignerError']);
             }
-            require_once($libDir . 'SetaPDF-Signer/library/SetaPDF/Autoload.php');
+            require_once($libPath);
 
             if (DocumentController::ACTIONS[$args['actionId']] == 'VAL' && !in_array($workflow['signature_mode'], ['eidas', 'eidas_metasign'])) {
                 $url = UrlController::getCoreUrl();
@@ -945,10 +944,9 @@ class DocumentController
                 $tmpFilename = $tmpPath . $GLOBALS['id'] . '_' . rand() . 'adr.pdf';
                 copy($pathToDocument, $tmpFilename);
 
-                $configPath = CoreConfigModel::getConfigPath();
-                $overrideFile = "{$configPath}/override/setasign/fpdi_pdf-parser/src/autoload.php";
-                if (file_exists($overrideFile)) {
-                    require_once($overrideFile);
+                $libPath = CoreConfigModel::getFpdiPdfParserLibrary();
+                if (file_exists($libPath)) {
+                    require_once($libPath);
                 }
                 $pdf            = new Fpdi('P');
                 $pagesNumber    = $pdf->setSourceFile($tmpFilename);
@@ -1680,10 +1678,9 @@ class DocumentController
         $tmpFilename = $tmpPath . $GLOBALS['id'] . '_' . rand() . 'adr.pdf';
         copy($args['path'], $tmpFilename);
 
-        $configPath = CoreConfigModel::getConfigPath();
-        $overrideFile = "{$configPath}/override/setasign/fpdi_pdf-parser/src/autoload.php";
-        if (file_exists($overrideFile)) {
-            require_once($overrideFile);
+        $libPath = CoreConfigModel::getFpdiPdfParserLibrary();
+        if (file_exists($libPath)) {
+            require_once($libPath);
         }
         $pdf            = new Fpdi('P');
         $pagesNumber    = $pdf->setSourceFile($tmpFilename);
diff --git a/src/app/document/controllers/MetaSignSignatureController.php b/src/app/document/controllers/MetaSignSignatureController.php
index 995ceb439190bd229db9062c315ded906a66c9f4..5590204d3d008da5f359942f2743d63f22c23c5f 100644
--- a/src/app/document/controllers/MetaSignSignatureController.php
+++ b/src/app/document/controllers/MetaSignSignatureController.php
@@ -164,11 +164,11 @@ class MetaSignSignatureController
             return $pathToDocument;
         }
 
-        $libDir = CoreConfigModel::getLibrariesDirectory();
-        if (empty($libDir) || !is_file($libDir . 'SetaPDF-Signer/library/SetaPDF/Autoload.php')) {
+        $libPath = CoreConfigModel::getSetaPdfSignerLibrary();
+        if (empty($libPath) || !is_file($libPath)) {
             return ['code' => 404, 'errors' => 'SetaPDF-Signer library is not installed'];
         }
-        require_once($libDir . 'SetaPDF-Signer/library/SetaPDF/Autoload.php');
+        require_once($libPath);
 
         $tmpPath            = CoreConfigModel::getTmpPath();
         $signedDocumentPath = $tmpPath . $GLOBALS['id'] . '_' . rand() . '_signedDocument.pdf';
diff --git a/src/app/document/controllers/WatermarkController.php b/src/app/document/controllers/WatermarkController.php
index 8c8de05acc68a9fc7b45e34b5ff44ed22b29cfba..bc040493552abb2ce43a6119307114a04339bb97 100644
--- a/src/app/document/controllers/WatermarkController.php
+++ b/src/app/document/controllers/WatermarkController.php
@@ -55,10 +55,9 @@ class WatermarkController
             $text = str_replace("[{$value}]", $tmp, $text);
         }
 
-        $configPath = CoreConfigModel::getConfigPath();
-        $overrideFile = "{$configPath}/override/setasign/fpdi_pdf-parser/src/autoload.php";
-        if (file_exists($overrideFile)) {
-            require_once($overrideFile);
+        $libPath = CoreConfigModel::getFpdiPdfParserLibrary();
+        if (file_exists($libPath)) {
+            require_once($libPath);
         }
 
         try {
diff --git a/src/core/controllers/AuthenticationController.php b/src/core/controllers/AuthenticationController.php
index d43ec5536bb5c3337b7c97b2f8d57309432b1314..a8256349f12a936c9df43997c74a1de3b9d260ee 100755
--- a/src/core/controllers/AuthenticationController.php
+++ b/src/core/controllers/AuthenticationController.php
@@ -333,12 +333,12 @@ class AuthenticationController
 
     private static function azureSamlConnection()
     {
-        $libDir = CoreConfigModel::getLibrariesDirectory();
-        if (!is_file($libDir . 'simplesamlphp/lib/_autoload.php')) {
+        $libPath = CoreConfigModel::getSimpleSamlLibrary();
+        if (!is_file($libPath)) {
             return ['errors' => 'Library simplesamlphp not present'];
         }
+        require_once($libPath);
 
-        require_once($libDir . 'simplesamlphp/lib/_autoload.php');
         $as = new \SimpleSAML\Auth\Simple('default-sp');
         $as->requireAuth([
             'ReturnTo'          => UrlController::getCoreUrl(),
diff --git a/src/core/models/CoreConfigModel.php b/src/core/models/CoreConfigModel.php
index 86625b0890c1f6f3c931305d68202c0a2fa9a499..2317b257b8092275b4092b45360620e69e377ede 100755
--- a/src/core/models/CoreConfigModel.php
+++ b/src/core/models/CoreConfigModel.php
@@ -132,6 +132,53 @@ class CoreConfigModel
         return $librariesDirectory;
     }
 
+    public static function getSetaPdfFormFillerLibrary()
+    {
+        $libDir = CoreConfigModel::getLibrariesDirectory();
+        $libPath = null;
+
+        if (!empty($libDir) && is_file($libDir . 'SetaPDF-FormFiller-Full/library/SetaPDF/Autoload.php')) {
+            $libPath = $libDir . 'SetaPDF-FormFiller-Full/library/SetaPDF/Autoload.php';
+        }
+        return $libPath;
+    }
+
+    public static function getSetaPdfSignerLibrary()
+    {
+        $libDir = CoreConfigModel::getLibrariesDirectory();
+        $libPath = null;
+
+        if (!empty($libDir) && is_file($libDir . 'SetaPDF-Signer/library/SetaPDF/Autoload.php')) {
+            $libPath = $libDir . 'SetaPDF-Signer/library/SetaPDF/Autoload.php';
+        }
+        return $libPath;
+    }
+
+    public static function getFpdiPdfParserLibrary()
+    {
+        $configPath = CoreConfigModel::getConfigPath();
+        $libDir     = CoreConfigModel::getLibrariesDirectory();
+        $libPath    = null;
+
+        if (!empty($libDir) && is_file($libDir . 'FPDI-PDF-Parser/src/autoload.php')) {
+            $libPath = $libDir . 'FPDI-PDF-Parser/src/autoload.php';
+        } elseif (!empty($configPath) && is_file("{$configPath}/override/setasign/fpdi_pdf-parser/src/autoload.php")) {
+            $libPath = "{$configPath}/override/setasign/fpdi_pdf-parser/src/autoload.php";
+        }
+        return $libPath;
+    }
+
+    public static function getSimpleSamlLibrary()
+    {
+        $libDir = CoreConfigModel::getLibrariesDirectory();
+        $libPath = null;
+
+        if (!empty($libDir) && is_file($libDir . 'simplesamlphp/lib/_autoload.php')) {
+            $libPath = $libDir . 'simplesamlphp/lib/_autoload.php';
+        }
+        return $libPath;
+    }
+
     public static function getUniqueId()
     {
         $parts = explode('.', microtime(true));