FileReference problem with IE (6.0.2900 and 8 maybe)

Question

Hi! I've got a problem I've been stuck with for a long time and I seem to solve it by installing the Adobe Flash CS3 trial...
It's like this: I'm doing an exam work in mostly ActionScript 3. It's near the end and everything is working fine, I've tested it on all the computers and web-browsers at my university but my customer gets a error when he's uploading files. In short my program uploads files from a database with AMFPHP (everything works there, my customer can see all the files) and one of the functions is to upload new files. My code for that part looks almost exactly like the final example in the FileReference livedocs here:
http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/flash/net/FileReference.html
I've made it print a TextField for all the events but none are showing up with the error, what's happening is that you can click the button to upload files, get a file-browser window, mark a file and click open and then nothing happens. The program doesn't freeze, and it is hard to tell where the problem is because (and I'll explain more later) every time I've installed Adobe Flash CS3-trial to check my error the problem have gone away so I can't make more traces.
In short AMFPHP have a "on result"-function, where you set the actions to take after you've changed the database which I do in the completeHandler-function, which prints the new files I've uploaded. It doesn't redraw anthing if nothing was changed in the database (which there isn't) so I guess it simply goes by it and waits for other events, which it appears to be doing since it can respond to events after that.
Ok, here're my "solutions": I originally discovered the error myself on a 32-bit Windows XP only with IE 8 and all versions with IETester (program to simulate older versions of IE). Note that on all computers there have been no problems with Mozilla and Firefox. I wanted to debug so I installed Adobe Flash CS3-trial, the debugger wanted me to set "Global Settings Manager" to accept, I did and it worked on all versions of IE. I hoped that was the problem, because I think the computers I had tested it with where all XP 64-bit and Vista 32-bit (the problem being XP 32-bit and old IE version-related). However it made no change for my customer.
Then I found the error again on a my own old 32-bit XP computer with IE 6.0.2900 (same version as my customer), sadly didn't think of my final suggestion to the customer, and installed Flash CS3-trial to debug again. It worked but this time I thought Flash CS3-trial installed the latest version of Flash Player so I asked my customer to try that but it didn't do anything. Then I tried to uninstall Flash Player to check for myself but it didn't do any difference, I even did a system restoration with the Windows command to a point where I had that problem but it was gone. Though the problem is far from random, it never appears on the fixed computers and once it's fixed I can't get it to come back.
I'm not sure what to look for anymore, except a second hand shop that sells old computers and hope it've got a old version of IE and without whatever fixes my problem. Note, I've run the older versions with IETester and it always works for those versions on computers where it works on a later or latest version. On all computers it've worked with Firefox and Mozilla. The problem is always solved after I install Adobe Flash CS3-trial, I might be in the wrong forum but I mostly came to this site (tried on actionscript.org without any luck) to ask this: Is Adobe Flash CS3-trial installing some Flash-related drivers you don't get with the Adobe Flash Player? Even if I would ask my customer if I could install Flash CS3-trial on his computer it's still nothing I can do for all of his customers that will be using the program. Other than that any advice on what I could do or check?
Sorry if this got a little long, if this line catches your eyefirst I think that second to last paragraph is a good summary. Thanks for any reply

Answer 1

Never mind, scratch this or I'll just mark it as solved. I had another error so it wasn't easy to check, but now I got the older versions of Flash Player and indeed on the Flash Player 9 and below I got that original error. I installed a older version and then installed the one I had linked to my customer and it still didn't work. All I had to do was to restart my web-browser and it works, and I've been able to switch back and forth between the versions and make the error appear and reappear so I know it's it. Thanks anyway if soemone accidently read this