we are running ACE scheduler 1.x on windows2008R2 server.
There is one ACE executable (VB6) that perform some calculation calling excel, using custom funtion (third-part add-in) and then return and write to PI TAG.
All is OK during debugging (ACE wizard) , but, when running in background with ace scheduler, the ACE MODULE write to PI tag "2029", that is the excel error for "function not found".
The excel add-in is loaded/unloaded correctly from code.
The add-in works correctly when using excel.