Before the upgrade a little sample used to work, in fact is one of the samples on the tutorial for ABWiFi (the one that gets the location), after the update the "error" MsgBox pops up but it's empty, in other words, ABWiFi doesn't seem to work under B4A 1.50.
I've tested the ABWifi library with b4a 1.5 and it worked as expected.
I got the correct location.
If the ABGetLocation() function returns false and myWifi.ABWifiLastError() returns nothing it means there was no error, but no GPS location and no Network location was found.