Trying to enter a licence key for PGP desktop and getting a dump.... ntdll.dll

I have 10.3 installed in windows 8. All was perfect with the trial key.

I bought the key and got my e-mail. Now I'm going to  the desktop, select license, change license  and enter the key. If I get it wrong all is good and I get a error.

If I get it right.... I get a dump.  I've tried uninstall, reboot, reboot, reinstall with the same results .

The event log shows:

Faulting application name: PGPdesk.exe, version: 10.3.0.8741, time stamp: 0x50c11ea9

Faulting module name: ntdll.dll, version: 6.2.9200.16420, time stamp: 0x505aaa82

Exception code: 0xc0000374

Fault offset: 0x000da94f

Faulting process id: 0x146c

Faulting application start time: 0x01cdf4ec3c12d4ad

Faulting application path: C:\Program Files (x86)\PGP Corporation\PGP Desktop\PGPdesk.exe

Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll

Report Id: 85994ecc-60df-11e2-be8c-f0def180fb8a

Faulting package full name:

Faulting package-relative application ID:

Thanks in advance.

Derek