Problems bitmap filters FlashBuilder 4.7 / Air3.4 - Help!

Question

Yesterday, I purchased and installed FlashBuilder 4.7, 64 bit windows version.
With it, I built my project for ios, and installed an export release (air3.4 for ios) on my IPad 1 for testing.
Two "unforgivable" problems showed up:
1. Most of the artwork looks utterly spoiled, as if entirely different filter coefficients
were being applied to the bitmaps.
(note: builds with FlashPro 5.5, FlashPro 6.0 and FlashBuilder 4.6 / air3.1 for ios (32 bit) of
the same code all show consistent and proper results instead)
2. The application runs much slower than when it was exported for release from FlashBuilder 4.6.
Is there any way to deal with these problems?
(apart from applying for a refund)
Thanks in advance
PS: Tests on the desktop (using the air simulator) using FB 4.7 show the same filter problem.

Answer 1

I've been building as3 projects, without use of flex or mx, waiting for ADDED_TO_STAGE event before
starting the application.
I can't open TestButton2.fxp, both Flash Catalist CS5 and CS6 come up with next dialog when I try to open it:
I've just created a new Project, using Flex with MX & Spark, and including the swc with the button.
The one and only source (mxml-) file now contains:
<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
                                                     xmlns:s="library://ns.adobe.com/flex/spark"
                                                     xmlns:mx="library://ns.adobe.com/flex/mx">
          <fx:Declarations>
                    <!-- Place non-visual elements (e.g., services, value objects) here -->
          </fx:Declarations>
</s:WindowedApplication>
I don't know how to deal with flex/mx/spark/ mxml-files.
Could you paste the full content of the mxml file that you use to test the button, such that
I can copy it and try for myself as well?