Max_Williamson,  It sounds like an issue with the OMSA install. Verify that the version of OMSA is 8.0.2 as well. It will be the required version for the S130. You can find the download here for 32bit, or here for 64bit. Also, when you run the Setup.exe, be sure to do so as Administrator. When installing again, be sure to checkmark Storage to be included in the install.  Let me know if this helps resolve the issue with seeing the controller. 
I am told that even though it is a SW raid contoller the S310 should appear in OMSA. Mine doesn't! Dell webiste says When the installation is complete, to configure the S130 controller, install  the configuration driver (if necessary) used by Dell OpenManage (OMSA) component. Do we know what the "configutration driver" is?  
S130 (sw raid) not showing up in OMSA