iGo track to kmz for Google Maps import

[routeconverter]

First of all, I try to open all my 53 files (2'231 Kb total size, http://rapidshare.com/files/443118942/tracks.zip) in RouteConverter. While doing that I am getting several gpsbabel.exe errors.

Unfortunately, the rapidshare zip archive is already gone. Could you provide me with the archive again and send me the log file?

The most awful thing - as result of files opening, one point appears there far far away from my real tracks (and I can not find it in the list) - and the total length of my trip increases by ~20'000 kms! And, if I open each file separately - it is ok, there is no such point.
What should I do?

Help me debug your problem.

Then, with regards to the next step. I need to leave only 5000 positions in the kmz file - so it will be displayed properly. How should I do it? Tried to do it with 'Delete positions' tool, but program hangs.
Is the processing so long?

Yes