[meccadon123]

My brother had this issue. Delete your current wireless tether app and the .apk. Go get the latest version and reinstall. If this doesn't correct the issue, my brother said that he moved "an app" (sorry not sure which) to his SD card, and it stopped wireless tether from working, when he moved it back, wireless tether worked again. If you have moved any apps recently, move them back to the phone individually until the app works. This is all i got on the topic, sorry if none of this helps.