Also this para may be relevant.
Solution: In my case the clm.nvm file had grown – not sure of the timeframe. In my case it was up to 450MB. There was only 1.2MB or so of free space on my 705 unit, which I concluded was causing the hiccups with transferring .dat files to .tcx.
This page may be of help to you.
http://kmwoley.com/blog/?p=566
Also this para may be relevant.
Solution: In my case the clm.nvm file had grown – not sure of the timeframe. In my case it was up to 450MB. There was only 1.2MB or so of free space on my 705 unit, which I concluded was causing the hiccups with transferring .dat files to .tcx.