Simply Delete all .TSF files in that particular Company Data in the Tally Directory.
Right click the Tally shortcut in the Desktop, goto properties, Copy the Tally .exe path which is in the Target Box. (for e.g C:\tally.erp9\tally.exe)
Then --> goto Start--> Run--> Paste press space and type the Tally full data path and press space 0 (C:\tally.erp9\tally.exe C:\tally.erp9\Data 0).
Press enter.
The tally opens, press ctrl+alt+R.
Choose the company that you are getting the error msg.
After rewirte process completed your problem solved.
Mani.V
