Looking at the stack, the file that can't be found isn't shell32.dll—that's right where it should be, and indeed probably the VM would not start without it—but rather whatever JCReportManager>>currentReport passed to #shellOpen:. Looks like you maybe saved a temp file, or are managing a directory of files, and want to open it/one of them in the default program so the user can print it? Make sure you're either passing an absolute path, or know what `File workingDirectory` is (and note that open/save dialogs will change it on you) and provide a correct path relative to that. Just sticking with absolute paths is probably best. Have a look at FileLocator for relative-to-absolute translation with an arbitrary starting point. I think there are some class methods on File that can handle simpler cases or be combined to do custom stuff.
If you're still stumped, break out the `ShellLibrary default shellOpen:` call on its own line and put a breakpoint (`self halt`) before it, then you can examine the argument live in the debugger and keep re-executing the shellOpen: call (just as a DoIt) until you figure out what's confusing it.