在lisrel中遇到几个问题，求解决：
问题是：W_A_R_N_I_N_G: PSI is not positive definite
               W_A_R_N_I_N_G: The solution was found non-admissible after 255 iterations.
                The following solution is preliminary and is provided only
                for the purpose of tracing the source of the problem.
                Setting AD>255 or AD=OFF may solve the problem

我的程序：
the effect of CSR

Observed  Variables: A_CSR1 A_CSR2 A_CSR3 A_CSR4 A_CSR5 S_CSR1 S_CSR2 S_CSR3 S_CSR4 S_CSR5 Q1 Q2 Q3 Q4 AF1 AF2 AF3 AB1 AB2 AB3 BI1 BI2 BI3

Covariance matrix from file C:\rmbr\csr.cov

Sample size 154

Latent variables: Altrucsr Selfcsr Quality Attfirm Attbrand Intent

Relationships:

     A_CSR1=1*Altrucsr
     A_CSR2 A_CSR3 A_CSR4 A_CSR5=Altrucsr
     S_CSR2=1*Selfcsr
     S_CSR3 S_CSR4 S_CSR5=Selfcsr
     Q2=1*Quality
     Q3 Q4=Quality
     AF1=1*Attfirm
     AF2 AF3=Attfirm
     AB1=1*Attbrand
     AB2 AB3=Attbrand
     BI1=1*Intent
     BI2 BI3=Intent

Attfirm=Altrucsr Selfcsr
Quality=Attfirm
Attbrand=Quality Attfirm
Intent=Attbrand Attfirm


Path Diagram
Admissibility check=off
End of problem
求高人解决，急需