Dear user,

I was converting CFC V6.1 backup on my laptop. I have CFC V8.0. while compiling major error occurred which is attached as screenshot. Kindly let me know if i have to do some setting before converting.

   I think your problem is not related to migrating from CFC V6.1 to CFC V8.0 .The important point is the procedure you should follow to migrate from the older version of S7-F/FH systems and related library to a newer version.

Read more in the following manual:

SIMATIC Industrial software S7 F/FH Systems - Configuring and Programming

I hope this helps,

hdhosseini