Probably It's not IBO question but FireBird 2.
You need check your triggers.
OLD Context Variables Now Read-only.
AFTER UPDATE/INSERT Triggers NEW. variables also Read-Only.

Ramil

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> My conversion and testing of 4.6 and FB2 is going OK but I have a really
> hard to find exception. The message is
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> Project PCC.exe raised exception class EIB_ISCError with message 'ISC ERROR
> CODE:335544359
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> ISC ERROR MESSAGE:
> attempted update of read-only column
> '. Process stopped. Use Step or Run to continue.
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> If I switch to 1.5.3 on the same database, I get no exception and I can get
> an SQL monitor dump of the traffic during the form creation. It shows
> nothing untoward e.g. missing aliasing or calculated fields in the update
> statement.
> The message is curious with regard to '.
> i.e. it's not telling me anything about the fieldname.
> Stepping thru the debugger is painful. The closest I have got to it is that
> it occurs in the SysExecPrepare procedure IB_Components but I'm damned if I
> can catch the statement which excepts.
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> Don't suppose anyone else is going thru something similar?
> Alan
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