Dear All !

Have you ever seen the attached error?

Though it´s in spanish, the translation would be: "M+V attributes couldn´t be read. Possible cause: system is occupied. Try once again" (i guess M+V stands for "monitoring" and "viewing").

Also attached is the correspondent help pop-up window: "Unexpected behaviour of the application.
Close all the applications and repeat the procedure. If error persists, check the installation. Get in touch with the Hotline in case of doubt..."

This happens in PCS7 v7.0 SP1 when we try to compile a CFC that used to work perfectly. It happens at random, and the CFC cannot be deleted, not even the project or the CPU...
After searching, we concluded that it has to do with the messages of the project (the error displays also when pressing the "messages" button inside an FB).

Anyway, it has created a lot of problems cause nothing else can be done but creating a new project, and even after performing these, it still persists. We corrected it once by updating multiproject hierarchy cause we synchronize at the same time the "CPU-oriented messages" option.

Should you have any idea of the cause or you need any additional information, please don´t hesitate to contact me.

Thank you very much in advance and best regards.

Hi bocatadeatun,

Have you installed HF3?
Hotfix 3 for CFC V7.0 + SP1

Are you migrating from older version project?

Regards