Set gpx_patch to create an error log. Upload the crash log file to paste_bin and then create a topic with the topic header gpx error log with a link to the log. Additional info such as your OS, the mod and track you are using is required to determine the problem. Without this info we cannot help you.
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www.mediafire.com] Some say you should click it, you know you want to.
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www.gp4central.com] <----GP4 Central