No Cyclic OB Interrupt Error upon compilation of the OS project (PCS7 V6.1 CEMAT V6.1)

Im having some error upon OS project compilation. This error only happens when I tried to insert a new C-measure block on my CFC program and set its MV for Long Term Archiving. The system enable us to download this program to the PLC with no problem. But upon compilation of the OS project, an error exist (please refer to the attachments). A pop window saying No OB Cyclic Interrupt appears. Internal Error:Could not access a process variable. Error :12103. Then this error doesnt allow the compilation to continue. Ive also attached the error log for your reference.

I also discovered one solution to this problem, this is by unchecking the Archiving option on OS compilation. After the compilation without the archiving option, we compiled the OS again this time with the Archiving option. There were no errors this time.

But I think this method is not really the answer because Ive also tried doing the same procedure (inserting a new C-measure block on other PLC projects using the PCS7 and CEMAT version and setting its MV to long term archiving). It works fine with other PLC Projects (please refer to the component view on the attached file).

Is there any configuration that weve missed specially on the CEMAT or PCS7 portion?

Or does it has to do with CFC programming, run time sequence, etc...

Please kindly share your ideas about this issue..

Thanks and best regards,

Lord Galen Muhi

Siemens Inc.