Samplemissing some environmental data ?

[Sunny]

Dear Maxent team:

Thank you very much for your great software.

I am trying to use Maxent to do species distribution modelling.
However, I encountered two issues:

1: I got the following warning:
Warning: Sample at x, y 168 in file is missing some environmental data
(e.g. var1)
Warning: Skipping sample at x, y

I have 350 records, only 30 of them records had this problem.

I have zoomed to the point in ArcMap, checked each layer against the
point, and found nothing is missing. I would appreciate if you could
point out possible cause of this warning

2: After I finished the modelling, I took a close look at the result.
I found some big difference of probability between two adjacent cells,
e.g. one cell has a value of 0.65, but an adjunct cell has a value of
0.25. This looks surprise to me . Since I am only using climate data,
and the cell size is 1KM, I would assume that adjacent cells would
have similar values. I am wondering if I did anything wrong. I
followed the tutorials, and the overall map looks reasonable to me.

[Mat Bond]

Hey,

I am new to this program myself, I believe that the data missing error
occurs when the environmental layer does not have data for one of your
observed locations, the end result being that your model can't be
based on any observed locations with this problem. Its odd that all
the environmental layer images seem to have data at these locations,
are the missing points generally near the coast perhaps?

For the other one what resolution is the environmental data set your
using? and what environmental layers are you using?

As I said I am very new to this program, I am by no means an expert I
am afraid

cheers,

Mat