LyX ⇒ LyX does not load amsmath for elsarticle

[tafi]

I seem to have found a problem in the way lyx 2.0 handles mathematics in the elsarticle class.

After entering a formula including an integral sign I get the compilation error "command \iint already defined etc."
This usually indicates a package conflict or a case of packages being called in the wrong order.
The LyX maths defaults for this class appear to call both amsmath and esint packages automatically (both checkboxes are selected). The esint package requitres that amsmath be called first (something which is well advertised on the esint documentation). The document, however won't compile in LyX unless the esint package is switched off.

To check the behaviour I exported the document to tex format and found that amsmath was not actually being called at all. I just had to add "\usepackage{amsmath}" before "\usepackage{esint}" and it then compiled.

I have since gone back to LyX and have unchecked both amsmath and esint before reincluding them manually as the first lines in the preamble.

This now seems to work.

Has anyone else noticed this behaviour? Is it a problem with LyX's own internal settings or am I missing something?

[gsmm]

Yes. I had a similar problem just a couple of hours ago. After seeing your post, I unchecked esint and included it manually in the Preamble, as you suggested.

It compiles now.

Thanks.
Ganesh