You'll have to admit, when I go with a bad post title I commit all the way. I didn't know how else to describe the issue at hand without inferring Gallery Server Pro v2.3 was broken in some way, which it isn't.
If you may recall, last night I blogged about the cool multi-file download feature of Gallery Server Pro 2.3 now on DBVT.COM. I thought I should probably test it before clicking the "publish" button. Boink! Instead of receiving the nifty "Save ZIP to file" dialog box popup like I do on my office server, the browser spit out an XML parsing error, one of those with a smidget of HTML in the top left-hand corner and nothing else.
It worked fine here on 64-bit Windows 2008 Server, but was bombing on my Windows 2003 32x host. (My VPS is in the process of being migrated over.) I remoted into my host and looked at the application log where I found the culprit.
GSP uses the ICSharpCode.SharpZipLib.dll library, so I knew that was my boy. I downloaded Roger Martin's Web 32-bit package and uploaded its SharpZipLib DLL to my site's bin directory. Back in business. "Publish It!"