>>>>>For some strange reason my form names are being converted to upper case when I re-open the properties dialog. This wasn't happening yesterday!
>>>>>Lets say we name the form "myFormName".
>>>>>Close the form.
>>>>>Open it and open the properties dialog. It's now "MYFORMNAME".
>>>>>If it's going to do that all the time, OK, but I'm 100% convinced it wasn't before.
>>>>>Any clues???
>>>>
>>>>It is a strange behaviour, I tried looking at it and it doesn't change. If you are using subclass form, try to use the VFP form baseclass.
>>>>
>>>>CREATE FORM myform DEFAULT.
>>>>
>>>>See it again...
>>>
>>>Do you mean that, for you, the case doesn't change?
>>>It didn't used to for me. But on the same form/same base class it now goes to upper case. This is a form that's in a project of course.
>>
>>Yes, it does not change for me, whether base class form or subclass form. You mean all your existing form have the same behaviour?
>
>No - only some forms - and I can't see any common factor

Possibility of corrupted form class (current). Try to copy the contents to new form class (use default base class).