Hello Som@1994

did you update the blocks, especially those from the Basis Library? Was any additional library installed on the ES with 8.2 which is now on the ES with 9.0 not installed?

Hello Som@1994,

Whenever we open a lower version of PCS7 project with higher version of PCS7, We have to do one of the function from below two points.

• Software Update with utilization of new functions 

• Software Update without utilization of new functions

And then compile and down load the project.

Kindly go through the below thread to work on above two functions.

Manual for Migration to PCS7 V9.0

Note: Kindly have a separate backup of PCS7 V8.2 project