Has anyone had any issues with WeatherCat and odd video issues. I do know that the USB driver was not compatible completely with Yosemite. They have just came out with a new version. Maybe not be on website quite yet. This is what one tech person told me about it because I thought this might me my issue. "However, functionally this driver is the same as the previous version, with the only exception being that this driver has been signed and thus no longer requires enabling unsigned drivers to be installed, which had been required in light of the changes in OS X 10.10"
My issue has been my iMac restarting without warning and repeating that on its own for 3 to 4 times before things seem to go back to normal. Lots of strange screens some times. Each time it restarted it would start two copies of WeatherCat. I do have it in my startup list. To make a long story short, I think, I tried to uninstall the USB driver but none of the files showed up where I was told they should be and WeatherCat was working. I was given the new version and installed it and driver showed up in right place but still had graphic issues after 2 days. During these errors I several time got messages about Graphic error.
I then uninstalled the new version and WeatherCat still kept working.
I then discovered to driver files in the system/library/extensions file that had old date so assumed they were from the old driver. I removed those and then WeatherCat wouldn't work as is shouldn't. I reinstalled the 10.10 driver and so far all is working correctly.
I am just guessing but I think that installing the old driver on Yosemite put the driver in the wrong place which caused the problems. We will see.
During this time I thought my computer was the problem and so took into Apple and they tested it for 4 days and found no issues.
I will get back if I still have issues and if not maybe this will help someone else.
Ken