If you are looking for the decompiler itself, visit https://github.com/jindrapetrik/jpexs-decompiler
NEW : We have got a new blog where we post some interesting SWF internals info.
List of issues#175 Incorrect decompilation (can't compile back)
Author: 
focus
focusDate created:
Type: bug
Visibility: Everybody
Assigned to:
Labels: AS3Obfuscated
State: closed 
Please, take a look at the attached file.
I see this lines there:
use namespace *;
Flash Pro will not compile them:
\package_1\name_1.as, Line 5 1004: Namespace was not found or is not a compile-time
constant.
as3simple _SecureOpt.swf (2 KiB)
State: new→opened
version 1.6.5 was released. This should be fixed, try it.
State: opened→upgraded
Oh, now it doesn't save \package_1\name_1.as while exporting FLA at all.
\package_1\name_2.as saves though.
State: upgraded→returned
State: returned→opened
version 1.6.5u1 was released
it should be fixed now
State: opened→upgraded
Yep, works fine! Thanks.
State: upgraded→closed