I used Live Mesh on my device "Palm Treo Pro with WM 6.1" but in the last month it was impossible to use it: "Time mismatch with server. Live Mesh refuses connection"... I followed the instruction on this forum to re-install the new version but it is impossible to remove the old version, so after all steps at the end my device alert me that the new version is not installed... I removed my device on the ring in mesh.com, but nothing..
What do you mean by it is impossible to remove the old version? Go to Settings on the device and then Programs, selecting Live Mesh to remove it. Then try installing again. If this still fails, please file a bug report on Connect with logs from the device per the instructions here: