Hi,

I have this wonderful long program:

Code:
Use Windows

Procedure Test
    String sText
    Move "㩃䑜瑡䙡敬⁸牐橯捥獴瑜獥楴杮〲瑜獥楴杮〲献獷" to sText
    Showln "put a break point on this line"
    Showln sText
End_Procedure

Send Test

Inkey WindowIndex
So I put a break point on the line where I say to put it and then select the data of the variable sText and remove it.
Press <enter> to change the data.

crash..
Click image for larger version. 

Name:	Df20DebuggerCrashOnChangeVariableValue.png 
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ID:	13248

Running in 64 bit (but I reproduced this in32 bit as well)
--
Wil