Error message appears when trying to run any of the reports in Exor:
Rep-110: File MAI3841. Cannot be opened (but it is in fast path as I opened it)
REP-1070: An error occurred while opening or saving a document
REP-0110: File MAI3841. Cannot be opened
In this case MAI3841 Payment Run report was run.
Check whether executable MAI3841 file exists in bin (by default it is c:\exor\bin) directory on Application server and that file has read/write permission set.