Mudbox 2014 - BEX64 error

[Anonymous]

Hey, I get this error when I try to start the program:

Problem signature:
Problem Event Name: BEX64
Application Name: mudbox.exe
Application Version: 8.0.0.1010
Application Timestamp: 513627f7
Fault Module Name: StackHash_1dc2
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 0000000000000000
Exception Code: c0000005
Exception Data: 0000000000000008
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1037
Additional Information 1: 1dc2
Additional Information 2: 1dc22fb1de37d348f27e54dbb5278e7d
Additional Information 3: eae3
Additional Information 4: eae36a4b5ffb27c9d33117f4125a75c2

Please help me, this is the student version, how to fix it?!