unable to find resource 'VM_global_library.vm' in any resource loader

We have recently upgrated to 2.3 (from 1.4.2) and we are checking the logs frequently for problems. We have found this velocity error.

2003-08-01 22:50:18,208 ERROR [velocity] ResourceManager : unable to find resource 'VM_global_library.vm' in any resource loader.

With more logging context

2003-08-01 22:50:17,961 INFO [velocity] Default ResourceManager initialization complete.
2003-08-01 22:50:17,969 INFO [velocity] Loaded System Directive: org.apache.velocity.runtime.directive.Literal
2003-08-01 22:50:17,976 INFO [velocity] Loaded System Directive: org.apache.velocity.runtime.directive.Macro
2003-08-01 22:50:17,988 INFO [velocity] Loaded System Directive: org.apache.velocity.runtime.directive.Parse
2003-08-01 22:50:18,000 INFO [velocity] Loaded System Directive: org.apache.velocity.runtime.directive.Include
2003-08-01 22:50:18,009 INFO [velocity] Loaded System Directive: org.apache.velocity.runtime.directive.Foreach
2003-08-01 22:50:18,196 INFO [velocity] Created: 20 parsers.
2003-08-01 22:50:18,197 INFO [velocity] Velocimacro : initialization starting.
2003-08-01 22:50:18,197 INFO [velocity] Velocimacro : adding VMs from VM library template : VM_global_library.vm
2003-08-01 22:50:18,208 ERROR [velocity] ResourceManager : unable to find resource 'VM_global_library.vm' in any resource loader.
2003-08-01 22:50:18,209 INFO [velocity] Velocimacro : error using VM library template VM_global_library.vm : org.apache.velocity.exception.ResourceNotFoundException: Unable to find resource 'VM_global_library.vm'
2003-08-01 22:50:18,209 INFO [velocity] Velocimacro : VM library template macro registration complete.
2003-08-01 22:50:18,209 INFO [velocity] Velocimacro : adding VMs from VM library template : templates/email/html/includes/macros.vm
2003-08-01 22:50:18,368 INFO [velocity] Velocimacro : added new VM : #authorlink( username ) : source = templates/email/html/includes/macros.vm
2003-08-01 22:50:18,379 INFO [velocity] Velocimacro : added new VM : #makelinkedhtml( string ) : source = templates/email/html/includes/macros.vm2003-08-01 22:50:18,405 INFO [velocity] ResourceManager : found templates/email/html/includes/macros.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
2003-08-01 22:50:18,406 INFO [velocity] Velocimacro : VM library template macro registration complete.
2003-08-01 22:50:18,406 INFO [velocity] Velocimacro : allowInline = true : VMs can be defined inline in templates
2003-08-01 22:50:18,406 INFO [velocity] Velocimacro : allowInlineToOverride = false : VMs defined inline may NOT replace previous VM definitions
2003-08-01 22:50:18,406 INFO [velocity] Velocimacro : allowInlineLocal = false : VMs defined inline will be global in scope if allowed.
2003-08-01 22:50:18,407 INFO [velocity] Velocimacro : messages on : VM system will output logging messages
2003-08-01 22:50:18,407 INFO [velocity] Velocimacro : autoload off : VM system will not automatically reload global library macros
2003-08-01 22:50:18,407 INFO [velocity] Velocimacro : initialization complete.
2003-08-01 22:50:18,407 INFO [velocity] Velocity successfully started.
2003-08-01 22:50:18,415 INFO [velocity] ResourceManager : found templates/email/text/issuecreated.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
-More-(8%)