Acrobat reader 7.0 cannot open ROOT-generated PDF files

I’m running under cygwin on an XP laptop, the cygwin is current. I’ve been using root for a while, but when I try to export the canvas to PDF I find that acrobat reader can’t open them (a error box pops up but doesn’t stay up long enough for me to read it).

Exporting to postscript works just fine, but I’d like to get the PDF working.

Is this a problem because of cygwin libraries? or with the version of root I’m using: 5.11/07?

(I updated my CVS sandbox this morning and am trying to build the latest version of root, but that’s having problem building on cygwin)

I just generated a pdf file using root 5.13/03 on cygwin. I can visualize it without problems using Abobe Reader 7.0