Container Field for .tif Files is Messing Up

For the past several years, I have been archiving old paper files onto a FileMaker database. In each record, an image of the paper file is stored in a container field. Since I started, I have been inserting the .tif files via Insert > Object > Create from File and then choose the one I need. Up until last week, when the image was inserted, an icon would appear and the filename would appear underneath it. Whichever program I had set as the default for opening .tif files would open the file if the container field was double-clicked. Now, however, whenever I do exactly as I have been doing for the past several years, I get a thumbnail of the image in the container field and double-clicking on the field simply lets you view the image in the container field using scroll bars which is very irksome and very inefficient. When I right click on the field and choose to open the image file, it opens in Imaging for Windows. Can someone please help me return to normal. I am running FileMaker Pro 5.5. Also, if it helps, before when I would right click on the field, it would bring up the options of Open Contents Package or Edit Package Package. Now, however, it brings up the options of Edit Image Document or Open Image Document. I have already tried messing with file type associations under folder options in Windows and have uninstalled/reinstalled FileMaker several times also to no avail. Please help!

Sincerely,

gigahz83