When files created under Macintosh applications are copied to a PC-formatted storage location, they will lose their resource fork. In other words, if there is no valid file extension, the file will lose its application association. When copied back to the Mac, these files will show up as “UNIX executable files” and are essentially useless. For applications that are PC-compatible, this problem is easily solved by renaming the file to include the three-letter pc extension (ie – .doc, .pdf, .xls). However, for applications such as CricketGraph and CellQuest, you must manually restore the resource fork before the file will open in the correct application.

Enter FileTyper, a shareware program you can download here, here, here, and here. This Classic program allows you to restore lost resource forks, by manually naming the file type and creating application. And – it allows batch file processing via AppleScript, which is really freaking handy.

And now, for my own reference:

CricketGraph Data File Attributes:
Type: CGDW
Creator: CRGR

CricketGraph Graph File Attributes:
Type: CGGW
Creator: CRGR

CellQuest Figure File Attributes:
Type: BDLE
Creator: BDLY

CellQuest Data File Attributes:
Type: BDLM
Creator: BDLY