Firefox Multiple File Upload - allowed extensions

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Hi!

I have a problem with the Mutiple Files Upload.
Other than the Single File Upload, where u can see all files, in Mutiple Files Upload the extensions are limited to the allowed extensions.

Today I noticed that in Firefox there are no png shown... even if the upload window listed *.png.

Chrome and IE show the png files... so I looked into the problem with the Firefox and found that the flashvars param of the uplad swf object is broken. Well only the parameter of the extnsion list is shortend.

"movieName=SWFUpload_0&uploadURL=%2Findex.php%2Ftools%2Frequired%2Ffiles%2Fimporters%2Fmultiple&useQueryString=false&requeueOnError=false&httpSuccess=&params=ccm-session%3Dhr50sffotl4s8m4m7vuav34703%26amp%3BsearchInstance%3Dfile1342432911%26amp%3BocID%3D%26amp%3Bccm_token%3D1342432915%253Afb59c314f2826ed67b3987d9f95600c0&filePostName=Filedata&fileTypes=*.3gp%3B*.avi%3B*.csv%3B*.doc%3B*.docx%3B*.flv%3B*.gif%3B*.ico%3B*.jpeg%3B*.jpg%3B*.kml%3B*.m4a%3B*.m4v%3B*.mov%3B*.mp3%3B*.mp4%3B*.mpeg%3B*.mpg%3B*.pdf%3B*...20Dateien&fileSizeLimit=100%20MB&fileUploadLimit=100&fileQueueLimit=0&debugEnabled=false&buttonImageURL=%2Fconcrete%2Fimages%2Ficons%2Fadd_file_swfupload.png&buttonWidth=80&buttonHeight=16&buttonText=%3Cspan%20class%3D%22uploadButtonText%22%3Ehinzuf%C3%BCgen%3C%2Fspan%3E&buttonTextTopPadding=0&buttonTextLeftPadding=18&buttonTextStyle=.uploadButtonText%20%7Bbackground-color%3A%20%23eee%3B%20font-family%3A%20Helvetica%20Neue%2C%20Helvetica%2C%20Arial%7D&buttonAction=-110&buttonDisabled=false&buttonCursor=-2"

>>...mpeg%3B*.mpg%3B*.pdf%3B*...20Dateien&...<<

The Firefox Upload now still listed png but don't show the png files...

What can I do? Oo

lehr