Patch 3.19 has trouble installing

[LAZYARMY]

Patch 3.19 installs after I click check for updates and download Patch 3.19, it say click ok to turn off your Civilization IV and install the patch. After I click ok it doesnt open an installshield wizard it just shows my desktop. The about the beyond the sword says
Civ Version 313
Save Version 301
Build Version 3.0.0.1
Build Date Fri Sept 21 14:16:18 2007
Build FINAL RELEASE
Mod Name No
Why isnt it downloading completely?