Question: Loading Lightcap file doesn't quite work

[ijacobs]

Here's the code I'm using to load a lightcap file (it exists within a button which is not included):

[FileNameSetNext,"path_to_my_lightcap_file\lightcapFile.ZLD"][IPress,Light:LightCap:Open]

When I push my button it doesn't throw an error but the lightcap doesn't get loaded either. So I push the button again and the lightcap loads up without a problem.

Why isn't the lightcap loading the first time I push the button? How do I fix this?

Thanks.

[marcus_civis]

I can't tell what might be going wrong from that code snippet.