ADDITIONAL OS VERSION INFORMATION :
Win 7 SP1 64-bit

EXTRA RELEVANT SYSTEM CONFIGURATION :
See below.

A DESCRIPTION OF THE PROBLEM :
Starting with Beta 1.8_b101 installation of both 32 & 64 bit versions are difficult and/or impossible. It seems to accept one or the other but not both. As you know, starting with IE10 the Browser defaults to 32-bit unless " Enable Enhanced Protection Mode " is enabled. Thus, it is important to have both versions installed. It will install sometimes and sometimes not. The order of install does not seem to matter nor does the condition of the Browser setting (32 or 64 bit). I tried all combinations. Sometimes it takes and sometimes it doesn't. I have uninstalled, erased the leftover directories in both Program Files & program Files (86), thus both versions. I then cleaned the registry and rebooted -- all to no avail.. Version 8 100 installs both fine. Both 101 & 102 give me grief. As a suggestion, you should have one version that installs both the 32 & 64 bit versions depending on the PC.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
See above

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
See above.
ACTUAL -
See above.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
A Pop-up stating that it did not install.

REPRODUCIBILITY :
This bug can be reproduced often.

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This is for your benefit as it relates to a simple install of your Beta 1.8_b101 and above. Sorry, I am not a Software Engineer.
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CUSTOMER SUBMITTED WORKAROUND :
Reverted back to v8.100 until the next release when I can try it again.