Issue switching between activities

I created a menu option to close out of the current activity and start a new activity...
it seems to work fine on my Samsung Galaxy S7 phone...
it works most of the time on my Nexus 10 tablet...
it never works on my Coby 9.7 tablet...

the only conclusion i can come to is maybe something to do with OS versions?
any thoughts?
thanks in advance

Code:

  Sub mnuX_Click
Dim Answ As Int
Dim txt As String
    txt = "Do you really want to quit the current " & vX & " activity?" & CRLF &...  

Issue switching between activities

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