Installing java custom tag

Question

I'm trying to install a custom tag written in java
(cfx_ExcelQuery) and am not having any success.
The tag was in a .jar file which I downloaded to the server
and extracted to the /classes subdirectory. The actual .class file
ended up in a subdirectory several levels below.
I registered the tag as ExcelQuery and wrote a test program
to call the tag according to the specs.
I got a CF error indicating the tag didn't exist until I
added the directory path containing the .class file (the exact
subdirectory). Now I get an internal server error instead (progress
I guess).
I have no experience installing/using java custom tags so I
may be missing something that would be obvious to someone else.
If anyone has any ideas please let me know.
Thanks,
Ken

Answer 1

I got this error:
Error processing CFX custom tag CFX_net.sourceforge.openxcf.javacfx.text2query. 
The CFX custom tag CFX_net.sourceforge.openxcf.javacfx.text2query was not found in the custom tag database. You must add custom tags to the database before using them. If you have added your tag to the database, check the spelling of the tag within your template to ensure that it matches the database entry. 
The error occurred in C:\Inetpub\wwwroot\scratch\DataLoad\checkGradData_NEW_July.cfm: line 191
189 :                                         
190 :      <cfx_text2Query
191 :       file="#FeedPath##FileName#"
192 :       firstRowIsHeader="false"
193 :       delimiter="#chr(9)#"