xplane 10 freeze

[marino]

This is keep happening but not all the time,either on final,an electrical failure or a complete Freeze of xplane 10,I am trying to establish the cause but cannot find anything,I had a hard copy of xplane installed in the past but einstalled it and bought an other one, the download version,because had to install the hard copy on a different machine ,had to buy the download version which in the future can give you a free upgrade to xplane 11,I am wondering if it is clashing with it,but I cannot see the older folder,this is not all the time ,it occurs frequently out of the blue,can you help.

 

Many thanks.