Error: "Record missing in SY_ModuleDate.m4t" or Error: "11 SY_Session.PVC 1474 or 1158 or 2273" when logging into Sage 100

Records in the SY_ModuleDate.M4T file may be missing or corrupted, or the entire file is corrupted.

CAUTION: Use caution when working with the below product functionality. Always create a backup of your data before proceeding with advanced solutions. If necessary, seek the assistance of a qualified Sage business partner, network administrator, or Sage customer support analyst.

Note: The SY_ModuleDate.M4T file is used to retain the Accounting Date set per user per module per company code.

• Consider restoring the SY_ModuleDate.M4T file from backup (this is the preferred solution):
  1. Have all users exit Sage 100
  2. Via Windows Explorer, access the "..\MAS90\MAS_System" folder where Sage 100 is installed.
  3. Find and rename the current SY_ModuleDate.m4t file to another name.
     • Example: bad_SY_ModuleDate.m4t
  4. Restore a copy of the SY_ModuleDate.m4t file from a recent good backup (prior to the issue occurring).
  5. Allow users back into Sage 100
• Consider obtaining a blank SY_ModuleDate.m4t file (with zero records) from another, known good installation (if available).
• Consider manually deleting all records from the SY_ModuleDate.m4t file (not the best option, as the file may be too corrupt to correct, and there may be hundreds of records to delete):
  1. Have all users (including the user experiencing the error) exit Sage 100
  2. Log on to Sage 100 under a User Logon with permission to access Data File Display and Maintenance, and other than the one that triggered the error
  3. Open Library Master, Utilities menu, Data File Display and Maintenance
  4. For File Name, enter: SY_ModuleDate.m4t
  5. Once the first record displays, delete each record manually, as follows:
     1. Click Delete button
     2. Click Yes button when prompted with the message "Delete the record with the following key?"

Note: It is not possible to use the Reinitialize Data Files utility's Manual option to clear the SY_ModuleDate.M4T file.