I have NW65sp7 running Groupwise 7.01. I have had a series of issues with expired certificates, LDAP etc. I finally recreated the CA, ran tcedirint, got pkidiag happy with all certificates, ran tckeygen. The system is loading both TC4 & TC5. Firstly, do I need TC4 for Backup Exec, GW or APC UPS? When loading TC4 I see the error "Error occurred during initialization of VM. Could not reserve enough space for object heap"? Any ideas on how to fix this? How do I know if TC5 is running? All "catalina" entries in java -show are suspended. Thanks for your help.