Problem

If a design file contains spaces in either the path or file name,
MicroStation will sometimes fail to open the the file when it is accessed from the Windows Explorer or an index list from a web browser.

MicroStation will display an error message that the file does not exist (see Figure 1).

Solution

 This is not actually a MicroStation issue but more an installer issue with the Windows operating systems. Names with spaces should be quoted by the Explorer in the application's command line, but this is not always the case.

Figure 1

Follow these steps to resolve the issue:
1. Open the Windows Explorer and go to any directory.
2. Choose View > Options and click the File Types tab.
3. Under Registered File Types scroll through the list and highlight
MicroStationDesignFile.
4. Click Edit. A new dialog box will open.
5. Under Actions, highlight open and click Edit.
6. In the field Application Used to Perform Action, you should see a
command line to execute MicroStation.
7. This command line needs to have "%1" (one) at the end of it, with
quotes (see Figure 2).

C:\Bentley\Program\MicroStation\ustation.exe "%1"
Add the "%1" if it is not there (also make sure it has quotes around
it).
8. Close the View Options dialog box.

Figure 2

Now when you double-click on a design file from the Windows Explorer or
a web browser it will open in MicroStation.

Note: The command lines for MicroStation PowerScope and MicroStation
PowerDraft are:

PowerDraft
C:\Win32app\Draft\Draft.exe "%1"

PowerScope
C:\Win32app\PwrScope\PwrScope.exe "%1"