When AIR SWF file is converted into Flex project using Flash Decompiler Trillix, the resulting Flex project cannot be opened in Flex Builder 3. However, you can open and work with it in Flex Builder 4 without problems. It is caused by functional peculiarities of Flex Builder 3.
If you still need to open the resulting Flex project in Flex Builder 3…
we can propose the following workaround:
Once the SWF file is decompiled using Flash Decompiler Trillix, find .project file in the resulting folder. Replace the following strings: