Cannot change HTML form development class

[Michael Pokraka]

Hi folks,
I've a bit of a situation at client where an incorrect development class
has been assigned to a FORM-HTMLPROCESS task. This is now fixed for all
web transactions that SAP generates.
e.g. 'Goto -> Web transaction' from within the task, then clicking on
generate will refuse to let us enter any other dev class -
an error message 'Object name SAPMY.... is reserved for generated
objects in development class Z...'
 
The other problem of course is that this is causing a major holdup and
client is desperate for a solution within the next 5 minutes....
 
Any input would be greatly appreciated.
Cheers
Mike