Is it possible to compile a project that uses Spark modules with Flash Builder 4.1?
I've added SDK 4.5 to FB and selected it in the project properties (no problems here).
But how about the 'Flex modules' tab in the project properties window, will it be able to add Spark modules to the application?
Yes, you will be able to use s:Module with FB 4. You'll have to do a new MXML component, then go to Flex Modules and click on the add button. (The new module wizard there won't support the spark module)
However, please note that this is unsupported in the sense that we haven't tried that out at our end. (But I personally have and it works )
Also: There won't be any UI support for any of the new RSL related module settings. You'll have to change those settings in flex-config.xml.
And Flash Builder 4.5 sets new RSL settings for a module so that RSLs linked in by the main app is treated differently.
All that said, it still works.