I would look at the code you added/oiwervritten in the subcluss.

>I have this object that I use to create such as this:
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>

>loList=CREATEOBJECT('FournierTransformationList')
>

>
>This is a big object. It is 352k. I never had any problem so far. I am using this object intensively across several applications and several times per minute. Today, I subclassed that object into another object that I called Job. So, I did it like this:
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>loList=CREATEOBJECT('Job')
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>
>Doing it like this from the EXE makes VFP to sit there indefinitely. So, the program hangs. I can however do this command from the command window and obtain the instantiation of the object immediately. What could cause this effect?