I had the issue that 2 clients had a problem during creation of a calendar entry, opening mail, …
They always received the error message “Overflow“
Some investigations later ( remove CACHE.NDK, … ) I found this helpful link and I checked the NOTES.INI. During the upgrade of Adobe Reader to Adobe XI some modifications are made in the NOTES.INI:
;AddInMenus=scanezmulti.dll,D:\Apps\Office\Adobe\ACROBA~1.0\PDFMaker\Mail\LOTUSN~1\PDFMLO~1.DLL in notes.ini
After removing this line the error was gone.
Great thank to Adobe !!