Error message appears in schema comparison

[alexa]

Could you please let us know what version of dbForge you are using and whether you are using x32 or x64 operating system?

Also, please let us know what are the versions of the compared servers and whether they are of x32 or x64.

The snapshots of the compared databases would be also of help.

You can send a reply straight to our support system at supportATdevartDOTcom

[alexa]

We recommend you to see the following:
https://msdn.microsoft.com/en-us/library/ms178074.aspx
https://msdn.microsoft.com/en-us/library/ms131048.aspx