Try downloading ClonyX 2.0.1.5
here. It might be able to identify the protection since U say version 2.0.1.4 didn't and only reported read errors.
It also depends on the settings U used with Alcohol. I rarely use this software for purposes other than CD emulation.
If the game didn't work in the virtual drive, then either the dump was not 1:1 OR Alcohol may be blacklisted by the game. Make sure U have the latest version. U could also try mounting with the (latest) 'Daemon Tools', ie. v3.33.
If the game has a
hardware protection (CD-cops, Securom 4.8xx or Starforce) then a media descriptor file is also needed (.mds or .bwa file). U can try the Blindwrite + BWAbuilder combo.
But as I said all this depends on the CD protection.
What is the game title and its edition (ie. US, European, ...) ???