#2 changing form structures not handled

[Stefan Roock]

when doUseMaterial or doUpdateMaterial is called with a
form which has a structure other then the initial
structure, nothing happens
at least an exception/assertion should create an error
message

I have to admit that I didn't find the bug by trying it
out but by reading the source.

[Jörn Koch]

Logged In: YES
user_id=951901

If this scenario turns out to be unconsidered the following
solution is suggested:

The initial structure should be required as a precondition of
doUseMaterial or doUpdateMaterial. However, the first call of
one of these operations should accept ANY structure (kind of
an implicit form tool configuration).

[Jörn Koch]

Logged In: YES
user_id=951901

If this scenario turns out to be unconsidered the following
solution is suggested:

The initial structure should be required as a precondition of
doUseMaterial or doUpdateMaterial. However, the first call of
one of these operations should accept ANY structure (kind of
an implicit form tool configuration).