I have problem with psychonauts! When I click on the installation, I get an error. I'm returning the game 4 times same thing happens and too I turned off the anti virus! Help me pls!

The screenshot you've provided already includes all the needed steps to solve the issue.

In short, something went wrong when you downloaded the setup_psychonauts_2.1.0.12-1.bin file, and the self-check routines included in the GOG installers have detected that. You'll need to download it again from GOG and then try to run the installer again, with the new bin file in place of course.

If you still have issues even after re-downloading, you can try to skip the integrity check I guess and see if that works out, however it should not normally fail.

This should always be your first step whenever you have such a problem:

https://www.google.com/search?q=+psychonauts+gog+integrity+check

One of the results is this thread which suggests running the installer as admin:

https://www.gog.com/forum/general_archive/installation_packages_not_functioning_properly/page1

Did you try that?

Nope dont work agine

Have you spoken to a urologist?

eh? what's that got to do with his problem?

It was a joke. :P I love the game but the name Psychonauts always sounded like some urinary disorder or type of VD. :P

Don't explain the joke!

As for the actual problem, try downloading it again like WinterSnowfall said but make sure you delete the old .bin file before you download the new one.

Nope dont work :(

I downloaded psychonauts installer and for now have this files:
setup_psychonauts_2.2.0.13.exe (32 MB)
setup_psychonauts_2.2.0.13-1.bin (3.9 GB)
setup_psychonauts_2.2.0.13-2.bin (90 MB)

Your installer says about: setup_psychonauts_2.1.0.12-1.bin

Really, try re-download all three files

Nope agine

What are you using to download the files with?
Is your internet connection stable?

Sorry, but would it be possible for you to answer the suggestions a bit more detailed and not just in two words so people who are trying to help you could really understand what you have tried out exactly?

This means:
Did you download the installer files mentuioed above? (2.2.0.13. - 3 files)
Did you figure out why these don't match the error message shown to you the first time?
Did you check the filesizes which are mentioned above? Are they identical?
Did you try to turn off the check before starting the install? What happens if you do this?

This might sound harsh, but I assure you it is not meant that way. Unfortunately only anwering "yes" or "no" will not get you far in getting your game to run which is the goal from you as well as from us. Providing as many details as possible regarding your problem and what you have tried usually is the fastest was to reach your goal.

He is pirating the game, that's why he has 2.1.0.12 version which was replaced 2 years ago.

Luxa,
While you're answering Marko's questions, please let us know what folder you're trying to install the game in as well. Some older games have issues with being installed in the default folders.

Letting us know what OS you're using could help too.

Agreed, this thread is starting to remind me of something...