Hey, I get the error below from time to time when I have changed something in my app and try to upload it again to the emulator in eclipse. If I restart the emulator it works again for some while until I get this error again. Anyone else that has had this problem and know how to fix it?

[2009-08-25 10:11:22 - myApp] Failed to upload myApp.apk on device 'emulator-5554': Unable to open sync connection!
[2009-08-25 10:11:22 - myApp] Launch canceled!

Cheers
Wox

Hi woxman,

I had the same problem, even if with my HTC Dream, not the emulator. Occasionally, the Device view in the Eclipse DDMS would list many copies of the device, all of them Offline, and I wouldn't be able to run anything on the device if I tried to plug it back in.

What seems to fix this is running

adb kill-server

from the command line. It cleans up the list of Offline devices and allows me to run applications on the device again.

Hope it works,
Alessio