I am on Mac OSX. I have created a widget using the Aptana Studio WRT Plugin. Packaging the widget using Aptana is successful; the widget package can be successfully deployed and installed.
However, if I don't use Aptana, and simply use the native OSX zip utility (either via command line or context menu), the resulting widget package cannot be installed. I am using the same files, and I have unzipped both the Aptana package and the native os x package, and compared the contents, and they appear to be identical.
I am guessing it is the zip format, so the question is, what zip format does the Aptana WRT Plugin use for packaging widgets (and how can I use the same compression format from the command line)?