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yet another memory read error

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The final line of the code i''ve posted is where my program crashes, on it''s first iteration. Can anyone see anything wrong with the code itself, or is there likely to be a problem with the data I''m sending it?
void CalcWorldLight(vertex_t **ob, light_t *lights, int wverts, int hverts, int numlights)
{
	int vwcnt, vhcnt, lcnt;

	for (vwcnt = 0; vwcnt <= wverts; vwcnt++)
	{
		for (vhcnt = 0; vhcnt <= hverts; vhcnt++)
		{
			ob[vwcnt][vhcnt].final_colour = ob[vwcnt][vhcnt].colour.emissive;

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Try doing it with a single dimension array first. Also be sure to check if you''re actually getting a valid pointer and not a null/random value.

Check to see if it''s the ob[][].colour.emissive or the ob[][].final_color that''s actually throwing the error.

As I detest multi-dimensional arrays (personal preference) I can''t vouch for the validity of your syntax (I don''t know if you wrote it properally). Looks fine from what I see.

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lol - I thought that was a strange smiley until I worked out the problem myself

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