--- a/IndexPlugin/PostgreSQLWrapper.cpp	Thu Oct 29 12:01:30 2015 +0100
+++ b/IndexPlugin/PostgreSQLWrapper.cpp	Thu Oct 29 12:24:38 2015 +0100
@@ -1504,6 +1504,10 @@
 
     if (version == 5 && targetVersion == 6)
     {
+      version_ = 6;  // Must be here, otherwise calls to
+                     // SetMainDicomTag() during the reconstruction of
+                     // the DICOM tags will fail as the column type
+                     // has been altered
       connection_->Execute("ALTER TABLE MainDicomTags ALTER COLUMN value TYPE TEXT");
       connection_->Execute("ALTER TABLE DicomIdentifiers ALTER COLUMN value TYPE TEXT");
       OrthancPluginReconstructMainDicomTags(context_, storageArea, OrthancPluginResourceType_Patient);
@@ -1512,7 +1516,6 @@
       OrthancPluginReconstructMainDicomTags(context_, storageArea, OrthancPluginResourceType_Instance);
       connection_->Execute("DELETE FROM GlobalProperties WHERE property=1");      
       connection_->Execute("INSERT INTO GlobalProperties VALUES (1, '6');");
-      version_ = 6;
       return;  // Success
     }