Explorer.exe 'error'

Hello 2 all

First off all, this problem is not the same as the other user: dmex
Second, sorry if my English is not well written.......
Third, here's the problem: When i click the explorer button in the task bar, a pop up window pops up (duh.....) and shows the following message (I translated it from PT, so if is not well, sorry.....): 'This file does not have an affiliate program that allows you to perform this action. Install a program or if one is already installed, create an association in control panel 'default programs'.

I've followed the instructions and that's all ok @ the control panel.......
Hope that some1 helps....... :)

Thanks in advance,
J.B.

Hi Sarah.
Thanks 4 U're reply.

Here's the print screen, it's in Portuguese, but the translation is the one that I've posted (+/-..... ), hope that helps.

Thanks again,
J.B.

Hi.

Thanks 4 the tip, but...... didn't work......
Keeps giving the same error......