Tango backtrace hack?

[Robert Fraser]

Robert Fraser wrote:
> Robert Fraser wrote:
>> Has anyone been able to get the backtrace hack working with the newest 
>> Tango?
>>
>> Thanks,
>> Robert
> 
> ... On Windows + DMD 1.041?

In particular, I've narrowed the problem down to CreateProcessW, which 
is sending "The parameter is incorrect." This is rendered as:

tango.sys.Process.ProcessCreateException: Could not create process for 
C:/d/dmd/bin/dmc.exe : The parameter is incorrect.

Any Tango lovers know what the issue might be? (I know I should have 
posted this in learn, sorry!)