Sage 50 file system error 95 in file [File].DAT. indicates unable to save a transaction or unable to open the program. This error causes ending process w3dbsmgr.exe, stopped Actian or damaged userpref.dat file. You need to troubleshoot network connectivity issues, start or restart Actian, and rename the Userpref.dat file https://www.askforaccounting.com/sage-50-file-system-error-95/