General Description: Why can't I load a JEDEC file by selecting "File ->Open"?
The "File" operations are only for JCD (JTAG Configuration Data) files. This file includes the chain information, which is loaded from a previous session. Using "File -> Open" will allow you to load this configuration file, but not a JEDEC file.
To load a JEDEC file, double-click the field under "Design File Name" to allow you to browse and select a JEDEC file. You must have the cable connected when performing this operation.