There are 2 different set of logs for GUMS: the client logs and the server logs. To solve some problems, you may also look in the apache logs (VDT installation only). The client logs are located in $VDT_LOCATION/gums/var/log for a VDT installation or /var/log for a manual installation. These logs cover the activities associated with the gums and gums-host commands:
This occurs if you have not added your DN to the 'admins' user group using the 'addAdmin' tool or if the 'admins' user group is not added to the configuration with "write" access. This can also happen you if you use gums-host to retrieve maps that do not match the certificate host. A couple of other things to watch for are:
This is probably a problem related to apache in VDT: it doesn't accept GT3 style proxy. Check your apache log, you might find "Certificate Verification: Error (20): unable to get local issuer certificate". Try using "grid-proxy-init -old" when generating your proxy certificate.