ordinarily i think PI handles spaces in paths ok. this is on OSX, right? one problem could be that ":" used to be the file hierarchy delimiter in mac OS 9 and earlier, and so apple still wants to parse that as though it were a "/". i've seen this problem in other applications. generally speaking unix filename rules are different than windows and "legacy" macos, so spaces and other 'weird' characters need to be escaped. i am just wondering if it's the combination of spaces and ":" that messed things up here.
rob