I recommend before investing your life savings into a stock, max out an IRA. Never put all you eggs in one basket. Additionally, you haven't lost any money unless you sold your shares.
It is hard for me to imagine a company that has as much proprietary products as cerp going under. Someone will bail them out if they are unable to do so themselves, thus pps would be on the rise. Also, they clearly have things in the works. Perhaps it is taking more time than expected to complete.