Well there are a few test you can try and then a second set of eyes.

are the sprites CLIPPED http://www.conitec.net/beta/ae_clipped.htm as their CLIPPED flag is set when they disappear? Alternatively you can watch the default debug panel and see if the VIS number decreases when the sprites disappear.Or check the value of num_visents http://www.conitec.net/beta/anum_visents.htm


A Published project will use the largest nexus set in any one level through wed if the -nx commandline isn't used, so is the nexus correct? Not sure this is a issue or fix. http://www.conitec.net/beta/anexus.htm


You can test if the behavior is the same in fullscreen vs windowed mode...

I can not be sure but possibly it's a sorting issue http://www.conitec.net/beta/ad3d_entsort.htm

You can check and (maybe) set level size and values with http://www.conitec.net/beta/level_ent.htm

It may in some way be that the sky is covering the sprites... But I'm not sure how if clip rangers are correct.. And the level size is large enough.


I can't guess to a solution, so maybe a forum search will lead you best. Otherwise you can ask a troubleshoot to work with the actual project files and even rule out a hardware issue.. I think the forum search is limited one year backward.

Last you can ask the Dev's and possibly submit the project to the Support team, however it will do you no good if they can not repeat the behavior on their end... But this might be the step you're most near at this point..

Good Luck