Rebuild Database Error

[Brucey]

OS- Windows XP on a tried and trusted system, working seamlessly for 2 years. Hoster Version 3.316.

I ran the build song database function and it thro up the following error message during the operation.

Field 'Songs.mfgname' cannot be a zero length string
would you like to see help?

On selecting help it cannot find file jeterr40.chm so cannot proceed this way.
I have checked the database and no manufacturer field is empty, therefor I'm assuming there is a problem with one of the kma files.

No new files added since last rebuild.

OK my questions are as follows

1. Where is this file jeterr40.chm located (I have reloaded hoster)
2. How do I source the kma file with the fault.

Otherwise system performing excellently.

best regards to all

Brucey