MIUI rom fails to install on HTC Desire
I'm doing this through goomanager.


First of all, you're rooted right? Also, this might seem obvious but I'm going to suggest it anyway: have you tried installing it through CWM Recovery? That seems to be the normal way to install/wipe ROMs, so I'd try that first. See Howto: Using the Recovery.

Also, your ROM installation ZIP might be corrupt. Double check the md5 sum on it, if it doesn't match, try redownloading it. Try another ROM, might be a corrupt version of the ROM (if it's a nightly for example).

If you have any questions or additional details, comment and I'll update this answer.