[TYPO3-english] Strange behaviour while saving records in Backend

[amadeo Marketing & Design - Paul Garais]

Hi everybody!

I have a strange problem and can't figure out, what the reason is: I have an extension, created with 
extension kickstarter that worked fine for several month (as the other extensions, created by me or 
others, do in this installation of Typo3).
My extension has several different record-types und some of them are connected through table 
relations. Some of these record-types has a field called "shortname". Every time I edit a record and 
save it, everything is fine. But if I create a new one and save it, all records of this type are 
changing ... the field "shortname" has only numbers in it (most of them are multiple of 256). Any 
ideas how it could happen that this specific field for all records is getting changed after creating 
a new one? As mentioned above, the extension where created with extension kickstarter and since then 
no changes where made.
The Typo3 version is 4.5.18. There is no function made by which is called for processing the records 
– just the standard behaviour for records.

Thanks for your help!

- Paul