I want to run a confirmatory factor analysis using SPSS Lavaan- I did it already and it works, but now i get the trouble report: "Warning # 6894. Command name: BEGIN PROGRAM

>The external program exited unexpectedly and lost its content, a new external

>program will startup to execute the rest of job."

How to solve this problem? Thank you

The lavaan documentation says that it requires R 4.0. That means you need to be using SPSS Statistics version 28. What version are you using?

I ran a simple model without a problem, but it sometimes happens that an error in the R code in BEGIN PROGRAM causes the R process to fail resulting in the message you are seeing. Try running small parts of the program to see if that reveals an issue.

Thank you.

I use SPSS Version 26 and have R 3.5 - usually it works within this combination.

Running small parts of the program didn´t make change- still the same error.

What happens if you just run this?

begin program r.

print(sessionInfo())

end program.