Gaia is an awesome framework for building full flash websites Its feature set contains very useful tools such as built in search engine optimisation and deep linking that save a developer lot of time when putting these projects together. The 3.2.5 update released 04/09/2011 fixed many bugs, however there are a few pitfalls still to avoid when creating a project and importing it into Flex or Flash Builder. I use a Mac and I can’t say if this problem occurs when developing on a Windows machine however when exporting a project Gaia seems to mess up the output of the first line in the .actionScriptProperties file, preventing it from compiling. What you get on the first line is a series of random characters that will cause a null pointer exception within Flash Builder when the project is imported and opened. To avoid this problem, delete the first line in the .actionScriptProperties file before this xml tag:
<xml version=”1.0″ encoding=”UTF-8″ standalone=”no”>
Now you should be able to compile the project and enjoy all the benefits from using Gaia for Flash Development.