Articles, Essays, and Journal Templates ⇒ "Undefined control sequence" error from ACS template achemso

[PZJuly]

Hi guys,

I'm rather new to both LaTex and the template achemso, with which I'm trying to write an article.

However, somehow I'm getting the error:

Code: Select all

! Undefined control sequence. 
1.1342 \msg_kernel_new:nnn
                           { xparse } { bad-arg-spec }
?

I basically just installed the CTex package and then achemso template. Then I do TeXify in the achemso-dem.tex. The process end with the above error.

In the forum there was similar discussion on "Undefined control sequence" issue. It was due to file version conflict. For my case, all packages are installed today from the a same reservoir. So probably the problem has another cause?

Thanks in advance!

[Johannes_B]

Check the log file for xparse and check where it is loaded. I think you have an outdated version somewhere.

[PZJuly]

Check the log file for xparse and check where it is loaded. I think you have an outdated version somewhere.

Thanks Johannes,

I'm in the process of updating MiKTex as you suggested. Let's see if the error disappears.

[PZJuly]

After update tex, the TeXify process does go through without error.

Thank you, Johanness, for the suggestion!