I have Factory Talk Release 5.0 and Kepware V. 4.264. I am using a PanelView Plus 1000 communicating Modbus to various devices. When I send a newly compiled .MER file to the panelview it says my data tags are no longer available. I can use the emulator fine on the laptop but the panelview will not work with the new file but works fine with older compiled files. I dont know if this is a coincidense but 1 year to the day of licensing the software things quit working right.Any help would be nice. Thanks Mark