Topic: pvk2pfx Went mad

After long-term use by official certificates was impatient to create the self-made. I do, as before did, through makecert/pvk2pfx from WDK 7.1. makecert fulfills normally, and pvk2pfx on any command line, even absolutely absurd, diligently deduces help. And so conducted by two different versions of the utility (win7_rtm.090713-1255 and win7_wdk.100208-1538, 32 and 64-digit). The version win7_rtm.090713-1255 precisely worked earlier for me (held a copy in the directory with utilities). Since then rearranged Windows, but all remaining works perfectly, including all system of assembly WDK 7.1. What for the mystic? Somebody faced?