Frequently Asked Questions
Sometimes other attachments can interfere with attached objects. Weapons HUDs and Security devices such as shields seem to be especially problematic at times. It may be worth detaching all your other attachments and then trying again. You can individually attach your other items until you can identify which is causing the problem.
Id also recommend trying your item in another viewer, very occasinally third party viewers can cause strange problems as they sometimes have settings and features that are not officially supported by LL and thus cause inexpected behaviour.
If you have not done so already, please also check our section on broken scripted items, sometimes scripts stop due to sim crashes etc. This can cause those items to stop responding.