Hello All, I have finally addressed all the cmd issues with my package build "bondlab." ?I would like to thank everyone that took the time to answer my questions. ?I have the following question: ?Currently the package has a non-standard directory/folder structure. ?The non-standard folders are listed below. ?I use connections to open and close directories during an analysis run. ?I don't think having these directories in the bondlab directory is a long term viable option as the number of mortgage and REMIC cusips is well over 2 million. ?My question is two parts: First part, what do you believe is the best way to store these objects as blobs (everything is serialized) in a database or in a folder?structure?residing on the local machine. In the event I first start with a folder structure on a local machine. ?Is it possible to?instruct R to create the directory and move the examples to the appropriate folder? ?For example, could I create a folder data and then move each of the below folders to data and on install move the "data folders"?to say a bondlabdata folder? Best Regards, Glenn Non Standard Folders are below BondData - bond objects (S4) identified by cusip with structural information: coupon, payment dates, etc... Groups - collateral group data: (S4) identifies the underlying collateral group of a mortgage REMIC PrepaymentModel - S4 object which holds mortgage prepayment model tuning parameters RatesData - holds swap rate curve history RDME - REMIC Disclosure Month End (S4): updated REMIC information? REMICData - REMIC structures (S4)? Scenario - Interest rate scenarios (S4) for total return analysis Schedules - structure elements (S4) for REMIC (PAC Schedules, etc) Tranches - Tranches for REMIC structure tool (S4) Waterfall - source - cash allocation rules for REMIC cash flow