you could split the "all supported formats" line in two or more lines, like :

"All Supported Formats of type 1 (*.ext1 *.ext2 *.ext3...)"
"All Supported Formats of type 2 (*.ext10 *.ext11 *.ext12...)"

this could work fine if you find common points for different sets of formats :

"Images (*.png *.jpg *.bmp...)"
"Documents (*.txt *.dat *.doc...)"

instead of

"All Supported Formats (*.png *.jpg *.bmp *.txt *.dat *.doc...)"

It depends on what these formats are of course