Can't open OMF file in Cubase 5 64bit


I’ve been trying to open an OMF file for a film I’m working on in Cubase 5 64bit, but when import it I get the error:

“A serious problem has occurred: Please try to save your project under another name and then restart Cubase 5.exe. If this problem persists please contact Steinberg Technical Support with a description of what you do to create this problem, and the created file C:\Program Files\Steinberg\Cubase 5\Cubase 5.LOG.”

And then nothing happens.

Here’s what it says in the log file:

Cubase5.exe Version 5.5.3 Build 651 - 5.3.2015 17:33

Timestamp is 4d2efa1a (Thu Jan 13 13:11:54 2011)
C:\Program Files\Steinberg\Cubase 5\Cubase5.exe

Exception code: C0000005 ACCESS_VIOLATION
Fault address: 800E86F1 01:000E76F1 C:\Program Files\Steinberg\Cubase 5\Components\omffilter.dllBytes at CS:EIP:
48 8b 10 4d 8b c8 48 83 c0 08 4c 03 ca 48 f7 d2
49 33 d1 49 23 d3 74 e8 48 8b 50 f8 84 d2 74 51

It opens fine in the 32bit version of Cubase 5, and a trial version of Cubase 7 64bit.

My operating system in Windows 7 64bit if that matters.