One of my sons worked with a partner last week who was having problems installing 64-bit Essbase on 64-bit Windows 7. It took a little bit to get the issues ironed out, but here is a summary of what happened. Hopefully this post will prevent similar problems for you.
On the initial installation, the partner tried to install Oracle EPM System without using UAC (a/k/a right click, Run as Administrator) to run the installtool.bat. This caused the installation to be incomplete and the subsequent configuration thus failed.
To try to fix the installation, the first thing that was attempted was an uninstall. The uninstallation appears to complete successfully, but on the subsequent reinstall, not all of the components, specifically the http server, were not enabled for selection. Of course, this did not look right, so upon further investigation, it was found that the uninstaller did not remove the dirty folder C:\Oracle\Middleware. We manually removed the C:\Oracle\Middleware directory, which was improperly installed in the first place, and then installation/configuration completed without a problem.
