unable to locate xerces-c_2_7.dll

[maphew]

After Express install, I get this popup error when typing gdalinfo (or any other utility) in the OSGeo4W shell:

gdalinfo.exe - Unable To Locate Component

This application has failed to start because xerces-c_2_7.dll was not found.
Re-installing the application may fix this problem.

This is a new computer with relatively little installed on it, aside from ArcGIS, Thunderbird, Firefox. Windows XP Professional x64, SP2. I selected only GDAL to install.

[warmerdam]

Confirmed, the express install package selection does not actually select dependencies for some reason. I'll dig into this.

[maphew]

Once one has used the Express install the way (that I've found) to get setup to recalulate the dependencies is to

1. Run osgeo4w-setup.exe
2. Select [Advanced]
3. Press [Next] until you get to "Select Packages" (5 times)
4. Press [View] until it shows "Up To Date"
5. Click on the circular arrows in the "New" column until it says "1.5.0-3" (Current is 1.5.0-2.'Reinstall' and 'Keep' appear to just repeat what Express install did, and have no effect.)
6. Verify dependencies have now been calculated by pressing [View] until it says "Partial". The packages list should now show a bunch of new items (see attached).
7. Continue install with [Next].

[maphew]

screen shot of setup showing dependencies selected

[warmerdam]

I believe I have now corrected this problem. The key seems to be to keep calling p.selectMissing() in ExpressPackageSetupPage::OnNext() until p.isMet() returns TRUE. The fix is committed in r1076.