I have a really weird problem...I have a custom skill function specified in the formInitProc. There is no skill error as part of this function. When I Q a instance that has already been placed, the edit object properties form opens up...but I keep getting a error that seems like it has to do something with the form height. Because if I set/unset the system/user/cdf toggle buttons, the error string also changes... *Error* difference: can't handle (959 - nil) *WARNING* CDF parameter function has problem. The 959 seems to have something to do with the height of the form...because this number changes based on the whether the system/user/cdf options are set/unset. There is no error while instantiating a new cell, only while querying to edit (the logic inside the custom skill function for instantiation and querying is the same). The error also goes away if I don't specify any function for formInitProc. Its almost like since I specify a function, some variable that is used to determine the form geometry is not getting set...I am 100% sure that there is no error as part of the custom skill func. Any ideas? Thanks Raj