Pt10 Error opening PT7.3 session Win7 64 bit

[JamesPondAqu]

Dear All

I have recently upgraded to PT10.1.2 running on WIN7 64bit.

I also work out of a studio which is running PT7.3 on MAC.
Whenever I try and open a 7.3 session from this studio on my PT10 Machine I get this message.

"Could not complete the open session...comand because Assertion in "f:\code\ws.protools_10.1.2\alturaports\newfilelib s\time\Time_TypedBase.h",line 100."

The only way I can open these sessions is first booting up into my second HDD ( Win7 32 bit) and opening the session with PT8 and then saving the session.

Just wondering if anyone else has experienced this?
( Good job i always keep the old OS)

Many Thnks

Mr Pond