QNX RTP corrupted my QNX 4 file manager

I have two hard drive partitions: one for QNX and one for Win95. I
installed QNX RTP under the Win95 partition.

Now, when I boot into QNX4 and login as root, the Photon file manager is all
messed up. When I launch file manager, it comes up in a tiny window about
3/4" square. If I maximize the window, it will not display the filenames.
I can see a directory structure, but with no text. Instead of showing the
names of the directories/files, all I see are lines.

I do not have this problem when I login as a different user.