>>> two errors :
>>>
>>> Database: H:\MI4\MI4_2.FDB
>>> Index 1 is corrupt on page 53072 level 1. File: ..\..\..\src\jrd\validation.cpp, line: 1648
>>> in table ACC$PREDOC (134)
>>>
>>> Database: H:\MI4\MI4_2.FDB
>>> Index 1 has orphan child page at page 51974 in table ACC$PREDOC (133)
>>
>> Index ID and relation ID
>
> Different IDs for table ACC$PREDOC (133 and 134) look very suspicious
> to me. May be the author often drop and recreate the table?..

After recreate relation can't obtain id less that was before...

Regards,
Vlad