S-help on Factor Analysis

["#KWOK CHING AUN,ELVIN#" <elvinkwok@pmail.ntu.edu.sg>]

Dear All,
 
I have 9 variables with a scale range of 1 to 5.
e.g variable 1: reduce data entry error, 3 (Range 1 to 5)
I use quartimax rotation,mle and number of factors = 2.
 
The error i got is problem in solve.qr(a): apparently singular matrix
Use traceback() to see the call stack.
 
Hope that you can help me
 
Thank You
Best Rgds
Elvin