PKCS12 keys not accepted in SOAPUI 4.5

I am unable to load PKCS12 keys in SOAPUI 4.5. The exact same setup works perfectly with SOAPUI 4.0.1 (same oS- win 7 - 64, same jvm - 1.6.0_32 - 64 bit, same workspace). Note that I have update the unlimited strength jars for my jdk (jks format keys are working fine)