[news.eclipse.modeling.m2m] [ATL] invalid zip files?

[Rene Ladan <r.c.ladan@xxxxxx>]

Hi,

I cleaned out all traces of ATL from my Eclipse installation (3.4.0) to see if
a fresh reinstall of ATL would help, but I keep getting this error when trying
to install it:

An error occurred while collecting items to be installed
  Error closing the output stream for org.eclipse.m2m.atl.doc/osgi.bundle/2.0.0.v200806051018 on repository file:/C:/eclipse/.
  Error unzipping C:\DOCUME~1\rladan\LOCALS~1\Temp\org.eclipse.m2m.atl.doc_2.0.0.v20080605101862709.jar: Invalid zip file format
  Error closing the output stream for org.eclipse.m2m.atl.engine/osgi.bundle/2.0.0.v200806051018 on repository file:/C:/eclipse/.
  Error unzipping C:\DOCUME~1\rladan\LOCALS~1\Temp\org.eclipse.m2m.atl.engine_2.0.0.v20080605101862716.jar: Invalid zip file format
  Error closing the output stream for org.eclipse.m2m.atl.source/osgi.bundle/2.0.0.v200806051018 on repository file:/C:/eclipse/.
  Error unzipping C:\DOCUME~1\rladan\LOCALS~1\Temp\org.eclipse.m2m.atl.source_2.0.0.v20080605101862730.jar: Invalid zip file format

The jar files mentioned are empty, the installer also creates these files:
- signatureFile62713.jar 1745052 bytes
- signatureFile62717.jar  206345 bytes
- signatureFile62732.jar  526985 bytes

Any ideas what causes this?

Thanks,
Rene