I am having a problem with Photometry. The software works Ok until I get to these steps. "Find the variable star in your image and right-click on it, and select Tag New Object. Type an ID for it (usually the variable name); this is the name that will appear on the graph and the reports. Next right-click on your comparison star and click Tag New Reference Star. If you have more than one filter set, then a dialog box will pop up to allow you to enter the reference magnitude in each plane. Otherwise you can simply enter it into the table." When I right-click on the star or the ref. star, a dialog box opens but there is no "Tag New Object" category. Then I tried to do it in the "Identify" tab but nothing happens. My files are color JPEG. What am I doing wrong?