Epicor Software, the business and manufacturing software developer, said this week that it has acquired Solarsoft Business Systems. Financial terms of the buy were not disclosed. Solarsoft is a developer of midmarket, enterprise resource planning (ERP) software, and was backed by Los Angeles-based private equity firm Marlin Equity Partners. Epicor is the combination of what was Irvine-based Epicor and Dublin, California-based Activant after an acquisitoin by Apax Partners, and is now run out of Dublin.