Installing packages in these "My Trailhead Playground" environments does not work properly. I evnetually got it to work by:

1. Create a new playground
2. Select "Get it now"
3. Select "Allow"
4. **An error screen will show in a new window saying "URL No Longer Exists"**
5. Select "Get it now"... again...
6. Select "Allow" and hope it works, if it does then...
7. Select "Install Here"
8. Fill out the broken form seen below that has missing text and mystery required fields
9. Hit "Confirm and Install"

For a company with as much money as Salesforce it's ridiculous that stuff like this breaks.

Hi, i'm trying to finish the challenge i already follow the steps but i got an error sales profile does not have the appropriate field-level security for the account Rating field. do you know how can i fix this ?

Hi ,
I was trying to solve the trailhead challenge under "Using Static Resources".

Am getting following message:
Challenge not yet complete... here's what's wrong: 
The page does not include a reference to the specified image

Following code am using.

<apex:page >
            <apex:pageBlock title="Pic" >
                    <apex:pageBlockSection >
                         <apex:image value="{!URLfor($Resource.vfimagetest, '/cats/kitten1.jpg')}"/>
                    </apex:pageBlockSection>
             </apex:pageBlock>
</apex:page>

Am I missing something here?

Regards,
Manjunath C Sarashetti