You can choose whether images are embedded in your Flash Catalyst SWF, or loaded dynamically; this can help to keep your SWF's small. Simply right-click an image and chose "Externalize Image".
Answered by: Adam Cath.
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When importing a SWF, Flash Catalyst only pulls the SWF asset into your project. Many SWF's, such as slideshows and media players, rely on external data files, such as configuration files or media assets. If you would like to use such a SWF in Catalyst, then you will have to place these external resources into your Catalyst project as well as importing the SWF.
Let's assume you have a SWF source folder that contains your SWF file and all of the external files it needs. You can open the SWF file from this folder and it works fine. But, if you import the SWF into Catalyst, the Catalyst project doesn't display it correctly because it can't load the external files. Here's what you do:
1. Open your swf source folder, and copy all of the files/folders there except the SWF you imported.
2. In Catalyst, Run/Preview your project (Ctl/Cmd-Enter)
2. Note the file path to Main.html in your browser
3. In your OS, open the folder that contains /bin-debug/Main.html from above
4. Open the "src" folder
5. Paste all of the files from step 1 into the src folder.
6. Catalyst won't pick up that your project changed, so tweak it a bit (add a Rectangle), and save it.
7. Run your project. If it doesn't work, try closing and reopening your project and running again.
For an example, check out: Using an XML-driven SWF in Catalyst to create a slideshow.
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Answered by: Bear Travis