Hi Dan,
Could you try re-installing your Gluu server. Use only the v2.4.3 FINAL version. Note that this will re-generate all the parameters.
As for the client, keep in mind that you only need `scim_rp_client_id` and `scim-rp-openid-keys.json`. Just get these two after the installation. And if you're only after SCIM, you only need to import SCIM-Client in Maven, nothing else.
Also, could you post your environment info (OS, etc.) and the OxTrust build info. Login to oxTrust GUI and go to "Configuration" -> "Organization Configuration" -> "OxTrust Settings".