Microsoft KB Archive/40715

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Knowledge Base

Locked Printer Driver File Can Hang Macintosh QuickBASIC

Article ID: 40715

Article Last Modified on 11/21/2006

This article was previously published under Q40715


Locking a printer driver file that is in the Macintosh System Folder may cause Microsoft QuickBASIC (b) or (d) to produce a system bomb or hang the system when it attempts to load a source file. The problem occurs even when you don't print to the printer.

The easy workaround is to unlock the printer driver file before loading any source files into the QuickBASIC editor.


The following steps are required to reproduce the problem:

  1. Select (single-click) a printer driver from the System Folder, such as the Laserwriter driver. From the desktop File menu, select Get Info, and click the box to LOCK the driver file. Close the Get Info window.
  2. Bring up the Chooser, select the Laserwriter, and click on the device that corresponds to the locked Laserwriter driver.
  3. Run QuickBASIC (b) or (d), and Open a source file. You may just double-click on a source file that runs QuickBASIC and loads and runs the program file.

At this point, the system bombs or hangs.

Microsoft is researching this problem and will post more information as it becomes available.

The printer driver may be unlocked by opening the System Folder and selecting the file that is locked (by single-clicking on the file). Then use Get Info from the File menu, which displays information about the printer driver, including a box that indicates the "Locking" status of the file. This box may be clicked on with the mouse to toggle the locking status on and off.

Additional query words: MQuickB

Keywords: KB40715