[antlr-interest] error(10): internal error: no such group file ST.stg

[J.R Karthikeyan]

Hi,

   I have the grammar written in antlrworks-1.4 which will generate the C code 
from the grammar. I like the string template feature and would like to use it. 
But I am getting the following error

error(10):  internal error: no such group file ST.stg 

I just changed my options from 

options
{
language = C;
backtrack = true
}

to 


options
{
language = C;
backtrack = true;
output = template;
rewrite = true;
}

Is string template supported for C or am I missing some library files.

Thanks,
Jrk.