LyX Errors: what can be the problem? & Text Cross-references?

[Luyt Du Chavoux, Mnr <[EMAIL PROTECTED]>]

Hi
I'm pretty new to Linux (Knoppix3.3 -> Debian testing/unstable) and LyX. I liked what 
I saw about LyX and want to write my thesis in it if I can. However, When I try to 
export my LyX file to pdf I get 4 latex errors all in this one place. What could be 
the problem? This "paragraph" is of type "Description" (It is the closest I could find 
to what I need below a figure). The two formulae is in math mode (with the little blue 
box around them)
Fig.2 The relation between animal gain and stocking rate (Jones & Sandland 1974). 
Using different stocking densities they determined experimentally that the gain in 
mass per animal (Average Daily Gain) drops linearly with an increase in stocking 
density having a relationship of the form:  Y = a - bx (Y is ADG per animal, x is 
stocking density and a and b are parameters determined experimentally). The production 
per hectare on the other hand, is a relationship of the form: Y = ax - bx^{2}   with 
the same parameters as above. In this example, up to about 1 animal per hectare there 
is no change in productivity per animal, usually ascribed to too much low-quality 
vegetative material (Morris et al. 1999) or maximum gain physiologically possible 
(Jones and Sandland 1974). Then, when the "critical stocking rate" is reached, there 
is a linear drop in production per animal. Assuming no change in the vegetation, the 
economic carrying capacity (max production per hectare) is reached at a stocking 
density of about 2.6 animals per hectare and if reproduction equals mortality (K) at 
the point where animals only just maintain their own body mass, ecological carrying 
capacity is reached at a stocking density of about 4.8 animals per hectare.
The four errors (I don't think they are exactly in the right places, but all are in 
this paragraph) are the following:
1.
Missing $ inserted.
 ...s a relationship of the form:Y = ax - bx^
                                                  {2}
I've inserted a begin-math/end-math symbol since I think
 you left one out. Proceed, with fingers crossed.
 
2.
Missing $ inserted.
 \end{description}
 I've inserted something that you may have forgotten.
 (See the <inserted text> above.)
 With luck, this will get me unwedged. But if you
really didn't forget anything, try typing `2' now; then
my insertion and my current dilemma will both disappear.
 
3.
LaTeX Error: Something's wrong--perhaps a missing \item.
 \end{description}
 Try typing  <return>  to proceed.
If that doesn't work, type  X <return>  to quit.
 
4.
LaTeX Error: Something's wrong--perhaps a missing \item.
 \end{description}
 Try typing  <return>  to proceed.
 If that doesn't work, type  X <return>  to quit.
 
Is there a quick way in LyX to turn the view of the document from LyX (just formated 
text) to LaTeX so that I can change the raw LaTeX? Should I do this at all (or is 
there another way to solve this problem)?
 
Another question: Is it possible to use cross-references where the Label (that is 
referenced) uses the first few words of the following text instead of a number and the 
cross-reference then display these words (when I try this, it just displays an empty 
space in the PDF!)? I want to use this for my reference list. I decided not to use 
BibTex (or rather Pybliography) because I already have my references in a Paradox 
database (in a Delphi program) together with keywords and my own notes that can be 
used for searching... it looks as if it will take too much time to get the whole 
database into Pybliographic (and I don't know how much of a searching capability 
Pybliogrphic has). It is easier for me to just copy and paste when I need a new 
reference in my paper.
 
Thanks
Chavoux Luyt