Yes, system specs would be helpful.
Here are some generic instructions on how to install the correct version of WebcamMax:
To Download WebcamMax:
Start a video conversation. Please click on the dropdown menu on YOUR video picture in the upper left corner. Choose "Download Video Effects". When you are done downloading, click on the same dropdown menu and start the video effects. Keep in mind that the video effects are very CPU intensive and there can be a momentary freeze of your video when loading webcamMax affects. This should only be temporary.