CF8 Administrator problem (oh god I broke it..)

Ok, was trying to add a classpath for a java CFX tag in administrator and now whenever I go to the JAVA and JVM in the administrator I get:

Element JDKPATH is undefined in FORM.

The error occurred in jvm.cfm: line 174
Called from jvm.cfm: line 145
Called from jvm.cfm: line 143
Called from jvm.cfm: line 1

-1 : Unable to display error's location in a CFML template.

Remote Address 127.0.0.1
Referrerhttp://127.0.0.1/CFIDE/administrator/navserver.cfm
Date/Time 16-Nov-07 10:02 AM
Stack Trace
at cfjvm2ecfm485176473._factor2(E:\cf8_final\cfusion\wwwroot\CFIDE\administrator\settings\jv m.cfm:174) at cfjvm2ecfm485176473._factor4(E:\cf8_final\cfusion\wwwroot\CFIDE\administrator\settings\jv m.cfm:145) at cfjvm2ecfm485176473._factor5(E:\cf8_final\cfusion\wwwroot\CFIDE\administrator\settings\jv m.cfm:143) at cfjvm2ecfm485176473.runPage(E:\cf8_final\cfusion\wwwroot\CFIDE\administrator\settings\jvm .cfm:1)

Also, not sure if this is "normal" or not - that E:\ is the install source (DVD drive), not the install location - which is D:\CFusion8\ or the webroot which is D:\WebRoot\

And, going to Settings Summary gives this little gem:

Variable RETHROW is undefined.

The error occurred in runtime.cfc: line 1606
Called from runtime.cfc: line 30
Called from runtime.cfc: line 1
Called from _report.cfm: line 8
Called from _report.cfm: line 1
Called from index.cfm: line 14

-1 : Unable to display error's location in a CFML template.
Remote Address 127.0.0.1
Referrerhttp://127.0.0.1/CFIDE/administrator/navserver.cfm
Date/Time 16-Nov-07 10:12 AM
Stack Trace
at cfruntime2ecfc21267795$funcGETPROPS.runFunction(E:\cf8_final\cfusion\wwwroot\CFIDE\admina pi\runtime.cfc:1606) at cfruntime2ecfc21267795._factor4(E:\cf8_final\cfusion\wwwroot\CFIDE\adminapi\runtime.cfc:3 0) at cfruntime2ecfc21267795.runPage(E:\cf8_final\cfusion\wwwroot\CFIDE\adminapi\runtime.cfc:1) at cf_report2ecfm955180241._factor73(E:\cf8_final\cfusion\wwwroot\CFIDE\administrator\report s\_report.cfm:8) at cf_report2ecfm955180241.runPage(E:\cf8_final\cfusion\wwwroot\CFIDE\administrator\reports\ _report.cfm:1) at cfindex2ecfm1514503215.runPage(E:\cf8_final\cfusion\wwwroot\CFIDE\administrator\reports\i ndex.cfm:14)