MATH.H library error

Gents,

Like many, I am trying to relearn a bit of programming on the MSX. :-)
Got MSX-C 1.2 up and running as per Javi's great relearning MSX blog post series.
Even managed (by reading a lot here) to get some sprites going. Now what I am trying to do is very simple (I think). Using COS/SIN functions to move the sprites around. I believe these are part of the MATH.H library.
When I simply try to add #include to my code and compile it, it throws an error:

[B:\INCLUDE\MATH.H] line 38 column 51: symbol table over flow

I have no clue why this is happening. If I remove the library from the .C file, it compiles and works with no issues.
Any ideas?

Thanks!

CR