E-gen erro ao tentar mapear tabelas do BD

Olá Pessoal,
Instalei o e-gen em meu computador(tomcat 5.5 + java 5.0 +e-gen 2.7),
até ai tudo bem consegui levantar o contexto do e-gen e criar um projeto.
Criei um dataSource dentro dele e realizei uma conexao de teste e tudo
ok, mas ao mapear qualquer tabela do banco é levantada a seguinte
exceção:

tb_pais - Compilation Error.:

javac: invalid flag: deUsage: javac where possible options include: -g 
Generate all debugging info -g:none Generate no debugging info 
-g:{lines,vars,source} Generate only some debugging info -nowarn 
Generate no warnings -verbose Output messages about what the compiler
 is doing -deprecation Output source locations where deprecated APIs are
 used -classpath Specify where to find user class files -cp Specify where to
 find user class files -sourcepath Specify where to find input source files 
-bootclasspath Override location of bootstrap class files -extdirs Override
 location of installed extensions -endorseddirs Override location of 
endorsed standards path -d Specify where to place generated class files 
-encoding Specify character encoding used by source files -source Provide
 source compatibility with specified release -target Generate class files for
 specific VM version -version Version information -help Print a synopsis of
 standard options -X Print a synopsis of nonstandard options -J Pass 
directly to the runtime system

tb_pais MetaData - Compilation Error.:

javac: invalid flag: deUsage: javac where possible options include: -g 
Generate all debugging info -g:none Generate no debugging info 
-g:{lines,vars,source} Generate only some debugging info -nowarn 
Generate no warnings -verbose Output messages about what the compiler
 is doing -deprecation Output source locations where deprecated APIs are 
used -classpath Specify where to find user class files -cp Specify where to
 find user class files -sourcepath Specify where to find input source files 
-bootclasspath Override location of bootstrap class files -extdirs Override
 location of installed extensions -endorseddirs Override location of 
endorsed standards path -d Specify where to place generated class files 
-encoding Specify character encoding used by source files -source Provide
 source compatibility with specified release -target Generate class files for
 specific VM version -version Version information -help Print a synopsis of 
standard options -X Print a synopsis of nonstandard options -J Pass 
directly to the runtime system 

Parece que o e-gen está passando algum parametro para o javac errado,
alguem tem ideia do que possa ser isso?
Se alguem souber de outro framework deste tipo peço que me envie algumas indicações.

No mais agradeço a ajuda da galera

alguem tem alguma ideia