Best way to debug?

What is the best way to debug an application that shows no useful
error messages?
I had a working app on openBD, Tomcat, vmWare Ubuntu Server and
migrated it to a real server and got this errors. It should be
identical installations. The only big difference is that the real
server is on a 64-bit OS.

I got this message:

Oops! Exception Encountered
Application Execution Exception
Error Type: Application : [N/A]
Error Messages:

Tag Context:
ID: CFFUNCTION
LINE: 54
Template: /opt/tomcat/webapps/openbd/Application.cfc
ID: CFIF
LINE: 64
Template: /opt/tomcat/webapps/openbd/Application.cfc
ID: CFSET
LINE: 65
Template: /opt/tomcat/webapps/openbd/Application.cfc
ID: CFFUNCTION
LINE: 106
Template: /opt/tomcat/webapps/openbd/coldbox/system/coldbox.cfc
ID: CFLOCK
LINE: 116
Template: /opt/tomcat/webapps/openbd/coldbox/system/coldbox.cfc
ID: CFTRY
LINE: 117
Template: /opt/tomcat/webapps/openbd/coldbox/system/coldbox.cfc
ID: CFIF
LINE: 157
Template: /opt/tomcat/webapps/openbd/coldbox/system/coldbox.cfc
ID: CFELSE
LINE: 160
Template: /opt/tomcat/webapps/openbd/coldbox/system/coldbox.cfc
ID: CFSET
LINE: 163
Template: /opt/tomcat/webapps/openbd/coldbox/system/coldbox.cfc
ID: CFFUNCTION
LINE: 365
Template: /opt/tomcat/webapps/openbd/coldbox/system/controller.cfc
ID: CFIF
LINE: 420
Template: /opt/tomcat/webapps/openbd/coldbox/system/controller.cfc
ID: CFELSE
LINE: 433
Template: /opt/tomcat/webapps/openbd/coldbox/system/controller.cfc
ID: CFIF
LINE: 436
Template: /opt/tomcat/webapps/openbd/coldbox/system/controller.cfc
ID: CFELSE
LINE: 442
Template: /opt/tomcat/webapps/openbd/coldbox/system/controller.cfc
ID: CFINVOKE
LINE: 444
Template: /opt/tomcat/webapps/openbd/coldbox/system/controller.cfc
ID: CFFUNCTION
LINE: 11
Template: /opt/tomcat/webapps/openbd/handlers/ehSecurity.cfc
ID: CFIF
LINE: 15
Template: /opt/tomcat/webapps/openbd/handlers/ehSecurity.cfc
ID: CFFUNCTION
LINE: 57
Template: /opt/tomcat/webapps/openbd/model/managers/Security.cfc
ID: CFSET
LINE: 61
Template: /opt/tomcat/webapps/openbd/model/managers/Security.cfc
ID: CFFUNCTION
LINE: 13
Template: /opt/tomcat/webapps/openbd/model/managers/User.cfc
ID: CFSET
LINE: 15
Template: /opt/tomcat/webapps/openbd/model/managers/User.cfc
ID: CFFUNCTION
LINE: 584
Template: /opt/tomcat/webapps/openbd/transfer/com/Transfer.cfc
ID: CFSCRIPT
LINE: 587
Template: /opt/tomcat/webapps/openbd/transfer/com/Transfer.cfc
ID: CFFUNCTION
LINE: 124
Template: /opt/tomcat/webapps/openbd/transfer/com/sql/SQLManager.cfc
ID: CFSCRIPT
LINE: 132
Template: /opt/tomcat/webapps/openbd/transfer/com/sql/SQLManager.cfc
ID: CFFUNCTION
LINE: 100
Template: /opt/tomcat/webapps/openbd/transfer/com/sql/
TransferGateway.cfc
ID: CFQUERY
LINE: 120
Template: /opt/tomcat/webapps/openbd/transfer/com/sql/
TransferGateway.cfc

To test one frame work at a time I started to debug Transfer, and have
instanziated a transfer object and imediatley got an error. But not on
my 32-bit OS.

Open BlueDragon Internal Server Error
The page you were executing caused an internal Open BlueDragon server
error
Request /usertest.cfm
File Trace /opt/tomcat/webapps/openbd/usertest.cfm

+-- /opt/tomcat/webapps/openbd/transfer/com/Transfer.cfc
    >
    +-- /opt/tomcat/webapps/openbd/transfer/com/dynamic/
DynamicManager.cfc
        >
        +-- /opt/tomcat/webapps/openbd/transfer/com/dynamic/
TransferPopulator.cfc
            >
            +-- /opt/tomcat/webapps/openbd/transfer/com/sql/
SQLManager.cfc
                >
                +-- /opt/tomcat/webapps/openbd/transfer/com/sql/
TransferSelecter.cfc
                    >
                    +-- /opt/tomcat/webapps/openbd/transfer/com/sql/
QueryExecution.cfc

Type Internal
Function(s) get
Tag Context CFSET: Line=26; Column=1

+-- CFFUNCTION: Line=95; Column=1
    >
    +-- CFTRY: Line=105; Column=2
        >
        +-- CFIF: Line=110; Column=3
            >
            +-- CFLOCK: Line=111; Column=4
                >
                +-- CFSCRIPT: Line=112; Column=4
                    >
                    +-- CFFUNCTION: Line=68; Column=1
                        >
                        +-- CFSCRIPT: Line=71; Column=2
                            >
                            +-- CFFUNCTION: Line=42; Column=1
                                >
                                +-- CFSCRIPT: Line=46; Column=2
                                    >
                                    +-- CFFUNCTION: Line=82; Column=1
                                        >
                                        +-- CFSCRIPT: Line=86;
Column=2
                                            >
                                            +-- CFFUNCTION: Line=42;
Column=1
                                                >
                                                +-- CFSCRIPT: Line=46;
Column=2
                                                    >
                                                    +-- CFFUNCTION:
Line=64; Column=1
                                                        >
                                                        +-- CFLOOP:
Line=78; Column=2

Hmm have you posted on the Transfer list. I don't know if transfer
runs on open bd

I developed my app on a vmWare Ubuntu Server with OpenBD, Apache,
Tomcat, and everything is working perfect including Transfer. But when
i migrate it to our production server I got this transfer errors. I
will check the transfer list.

I need to find a quick solution to this problem. What would be easiest
to do, replace transfer with cfquerys or another ORM, and if - which
ORM?