>>Hello,
>>
>>At one client it happens very frequently that the index of some tables gets corrupted.
>>
>>My guess is that the network connection is not very stable, but they checked the connection and say there should be no problems with the network.
>>
>>Yesterday a table got corrupted with the message (when appending a record):
>>

Index file "c:\Cinemas\transactions.cdx" tag "Trusedt" is corrupted. Please rebuild it."

>>
>>After that we suggested to run the program locally on the computer. I issued a REINDEX and they worked again. After 20 minutes the same message appeared.
>>
>>Then I deleted the CDX file and created the indexes again. That seemed to have helped, but I am not sure what causes this problem.
>>
>>The other strange thing is that this program does not alter the field Trusedt.
>>
>>Any ideas where I can look for a solution?
>
>What are the index expressions?

All indexes in this table are regular field expressions. That particular index is:
trUsedT TAG trUsedT