[plt-scheme] schemeql installation question

I've tried to install schemeql-0.05 on drscheme 205
unsuccessfully. On two computers, I have followed the
correct order (srPersist first then Schemeql).

Anyone with more luck and some pointers out there?
Below is the last three lines of DrSchemes
installation output:
**********************
setup-plt:  
C:\PROGRA~1\plt\./collects/setup/..\..\collects\mzlib\..\..\collects
gnu-unzip: bad header
not an unpackable distribution archive
***********************
Thx,
J.

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