Cubase Studio 4 crash

A new project has started crashing Cubase Studio 4 x64, seemingly from EastWest Play 3.0.20. I got this error, if it helps at all, seemingly at random. Might have started happening when using tempo track changes. It’s a template with lots of instruments loaded, about 4.5GB.

“Problem signature:
Problem Event Name: BEX64
Application Name: Cubase Studio 4.exe
Application Version:
Application Timestamp: 48bdb34b
Fault Module Name: play_VST_x64.dll
Fault Module Version:
Fault Module Timestamp: 4e306296
Exception Offset: 00000000001e2f4f
Exception Code: c000000d
Exception Data: 0000000000000000
OS Version: 6.1.7601.
Locale ID: 2057
Additional Information 1: a45b
Additional Information 2: a45b909fe1b1c7d841c0057172d92180
Additional Information 3: 8592
Additional Information 4: 85920824bad097dfd925e8b33dc19434”

Any clues?

The problem seems to have come from Play 3.0.20. I reverted to 2.1.2 and the problem seems gone.