i am experiencing the exact same Problem with ccsv4.4 right now. checkEnvSetup('ccsv4','F28335','setup') and checkEnvSetup('ccsv4','F28335','check') is done. But 'cc=ticcs' returns:
>> cc=ticcs Registering DLLs... IDE Link successfully registered its plug-in for Code Composer Studio (CCS). If CCS prompts you that "New components were detected," click Yes or OK in the prompt dialog box to enable components for all compatible CCS installations. Error using Link.ccssetup/Connect Cannot start CCS application (COM error code: 0x80040154). Verify that your CCS software is installed and configured properly.
Error in ticcs>Connect2App_CheckIdeVersion (line 248) hccs.Connect(1);
Error in ticcs (line 136) hccs = Connect2App_CheckIdeVersion;