If you had downloaded your certificate after 23/06/2011, your program won't run correctly, unless u want to sign following aps:
-ActiveFile2: 0xe0000230
-appuidviewer: 0xE845DC07
-BtSwitch2: 0xe0004d7f
-cClock OpenSign: 0xe09c2000
-DumpRom: 0xe22a83e8
-Flip Silent: 0xE66BE0E1
-FreeCertReq: 0xee861d70
-Gnu_Box: 0xe97764f0
-Handwave: 0xe030e141
-hello carbide: 0xE84BB912
-HelloOX v2.03: 0xEA9F483B
-LightSabre: 0xef9bcd9a
-MenuEditor: 0xef460b1c
-Modo: 0xef6cf8d3
-MoreCaps: 0xe4654ea4
-NeoReboot: 0xE001332E
-Nokmote2: 0xe000b842
-pen+c: 0xec41b409
-PhoneNetInfo2: 0xe0005c36
-Pybudzik: 0xe8283945
-RockNScroll: 0xe6758ec7
-ROMPatcher: 0xe4dd2dcb
-RomPatcher+ Lite Version: 0xE0050C10
-ScreenshotOS: 0xE0006281
-ShakeMe: 0xEFB3C8D8
-SignSis: 0xec696702
-SmsDiary: 0xEAAA3012
-Talknaut: 0xEE57B308
-ThemeMagic2: 0xe62a9968
Only these works fine. The solution is simple- brake your system.