A formatting error was discovered in the 2008 ACS 1-year PUMS files released on October 30, 2009. The affected variables FINCP, HINCP , PERNP and PINCP were displayed in scientific notation. The incorrect format caused unintentional rounding of these values. This formatting error has been corrected and the revised 2008 ACS 1-year PUMS files were re-released on November 3, 2009. After correction, the variables WAGP, SEMP, INTP, SSP, SSIP, PAP, RETP, and OIP sum correctly to PINCP, variables WAGP and SEMP sum correctly to PERNP, and PINCP summed across family members or household members will equal FINCP and HINCP respectively.