Newt Gingrich’s presidential campaign did a “software conversion” in June of 2012. Apparently that led to some problems:

Dear Ms. Sugarman: This letter is in response to your request for additional information, dated August 28, 2013. 1. Your letter indicates that two donors appear to exceed the primary contribution limit. Due to a software conversion in June of 2012, the aggregates of these donors were incorrect. On 9/18/13, the Committee issued a refund in the amount of $250 to W. Michael Brown and a refund in the amount of $250 to Marc A. Hall. These refunds will be disclosed on the next regularly schedule report filing. 2. Your letter indicates that the Committee was required to refund all contributions designated to the 2012 General Election within 60 days of May 2, 2012. The Committee refunded all contributions designated for the General on June 14, 2012 and disclosed these refunds on the July 2012 Monthly filing. This was well within the 60 day requirement. As the Committee continues to review and update its systems, if any further contributions designated for the 2012 General Election are identified, they are immediately refunded. 3. All contributions included in the unitemized receipt totals on the detailed summary pages were from contributors who have not given more than $200 in the aggregate cycle to date. Furthermore, these contributions were raised and designated for 2012 Primary Election debt retirement. 4. Due to a software conversion, several entries on Schedule D-P were incomplete. The October Quarterly Report has been corrected and amended to accurately disclose debt owed to New Gingrich. 5. The Committee verified the correct debt amount owed to Vision Screen Printing and Graphics. The Schedule D-P shows a credit in order to accurately reflect this corrected amount. This was not a credit given by the vendor, it was simply a correcting entry. 6. Due to a software conversion, several entries on Schedule B-P supporting Line 23 were incomplete. The October Quarterly Report has been amended to accurately disclose these disbursements. 7. The Committee has reviewed all reimbursements to staff for travel and subsistence and has determined that no further itemizations are required based on FEC regulations in effect at that time. 8. Due to a software conversion, several entries on Schedule D-P were incomplete. The October Quarterly Report has been amended to correctly disclose all debt. 9. All debt noted as IN DISPUTE on Schedule D-P indicates that the full amount of the debt disclosed is in dispute. The Committee is working with these vendors (Crimson Hexagon, Moshe Technologies, Resilient Corporation and Mark Gembecki) to resolve these issues. The Committee will continue to report all such debt as IN DISPUTE until these matters are resolved.