[plt-scheme] Crash adding collection path

Hi,

I seem to get a crash with DrScheme 4.2.5 whenever I try to add a collection
path in the Language -> Choose Language -> Show Details -> Collection Paths.
Pressing Add will crash DrScheme. I tried on two XP machines and one Vista.
Seems that for 4.2.4 everything worked but after upgrading to 4.2.5 on one
machine, it started to crash too.

Is this a known problem already?

Anyway thanks for providing such a great programming tool.

-Markku
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