JNI ERROR while deploying btchat sample with Qt Necessitas

While deploying the btchat sample on Nexus 7 with Android Version 4.2.1, the program aborts with the following messages:

JNI ERROR (app bug): accessed stale local reference 0xe680001d (index 7 in a table of size 4)
VM aborting
Fatal signal 11 (SIGSEGV) at 0xdeadd00d (code=1), thread 13965 (.example.btchat)

• The problem is identical if deploying local Qt librairies or using libriaires downloaded through Ministro
• The problem seams to be related to the QtConnectivity librairy, while deploying other programs not using this librairy works properly.