I need to restart my mac before I can download dives

[jeroenda]

Hi there,
If I don't restart the mac, my vyper doesn't connect. As soon as I've done a restart, it works as expected.
Strange as it is, my buddy doesn't have the problem, every download is without problems.
Difference between him and me is, that I hook my Iphone to the mac every night (synchro & charging).
Any suggestions?
Thanks, Jeroenda.

[nick]

Do you have low battery?

What kind of cable and driver are you using?