JRuby + JasperReports: cannot link Java class

hi,

issue:
NameError: cannot link Java class com.abc.myClass, probable missing
dependency: net/sf/jasperreports/engine/JRDataSource

get_proxy_or_package_under_package at
org/jruby/javasupport/JavaUtilities.java:54
method_missing at
C:/applications/jruby-1.6.4/lib/ruby/site_ruby/shared/builtin/javasupport/java.rb:51

JRuby v1.6.4 + JasperReports v4.1.2 + ROR v3.1.0 + MS Win7 64bit.

Did may be anyone encountered into such issue? Any possible solutions?

I’ve tried: java_import ‘com.abc.myClass’
I’ve tried: import ‘com.abc.myClass’
No luck.

Interesting, but the same config with JRuby v1.4.0 working fine …

appreciate any help,
–vs