What is the contents of your /Extra/org.chameleon.Boot.plist?
What version of the boot loader are you using?
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>DSDT</key>
<string>/Extra/DSDT.aml</string>
<key>DropSSDT</key>
<string>Yes</string>
<key>EthernetBuiltIn</key>
<string>Yes</string>
<key>Graphics Mode</key>
<string>1366x768x32</string>
<key>SMBIOS</key>
<string>/Extra/SMBios.plist</string>
<key>SMBIOSdefaults</key>
<string>Yes</string>
<key>SystemType</key>
<string>2</string>
<key>UseKernelCache</key>
<string>Yes</string>
<key>busratio</key>
<string>18</string>
<key>device-properties</key>
<string>5e0000000100000001000000520000000100000002010c00d041030a000000000101060000027fff04002c0000004100410050004c002c00690067002d0070006c006100740066006f0072006d002d006900640000000800000003006601</string>
</dict>
</plist>
DUnno how to check Chimera version but will install latest and see if it makes any difference. BTW I do have WIndows and Linux also installed....
INSTALLED Chimera 2.2.1 and the detailed error messages went away but I just got "Errors encountered whilst starting computer - pausing 5 seconds" so no real change!