Using PDP++ in windows XP

[Janet Hui-wen Hsiao <h.hsiao@sms.ed.ac.uk>]

Hi,

I installed PDP++ in Windows XP. However, whenever I want to save a project, 
there's an error message : 

c:\XP\sh.exe *** couldn't reserve space for cygwin's heap (0x1100000) in child, 
cygheap, win32 error 487
c:\XP\gzip.exe *** couldn't reserve space for cygwin's heap (0x1100000) in 
child, cygheap, win32 error 487

Would you please tell me how to fix this problem? thanks a lot

Janet