If you're encountering a 404 or 504 error while using Kaleidoscope, try the following steps first:
Quick Fixes
Clear your browser's cookies and cache.
Restart your browser.
Try accessing the page in a different browser (e.g., Chrome, Firefox, Safari).
Step 1: Clear Your Cookies and Cache
Switching roles frequently (like logging in as a client, then as a reviewer or applicant) can cause your browser to store conflicting cookies. Clearing them usually resolves the issue.
Quick Way to Clear Cookies for Kaleidoscope:
Click the lock icon 🔒 next to the Kaleidoscope URL in your browser.
Select Cookies.
Remove or clear all cookies listed for the site.
Refresh the page.
To Clear Full Cookies + Cache (Optional but Recommended):
Google Chrome
Click the 3 dots (top right) → Settings → Privacy & Security → Clear Browsing Data
Choose Cookies and other site data and Cached images and files
Click Clear data
Mozilla Firefox
Click the 3 lines (top right) → Settings → Privacy & Security
Under Cookies and Site Data, click Clear Data
Select both Cookies and Cached Web Content, then click Clear
Microsoft Edge
Click the 3 dots (top right) → Settings → Privacy, search, and services
Under Clear browsing data, click Choose what to clear
Select Cookies and other site data and Cached images and files
Click Clear now
Safari (Mac)
Go to Safari > Settings (or Preferences) → Privacy
Click Manage Website Data → Find and remove Kaleidoscope cookies, or click Remove All
Then go to the Advanced tab, enable Show Develop menu in menu bar
In the menu bar, go to Develop > Empty Caches
Step 2: Restart or Try a New Browser
After clearing cookies and cache:
Restart your browser
Or try using a different browser (e.g., switch from Chrome to Firefox)
Step 3: Still Seeing the Error? Send Us These Details in Your Support Ticket
If the issue still persists, our team needs a few details to effectively troubleshoot the problem:
The URL where you encountered the error
The time it occurred
A screenshot of your full screen, including the browser bar
If possible, a screenshot of the Developer Console (see below)
How to Open the Developer Console
Google Chrome
Windows/Linux: Press
Ctrl + Shift + IorF12Mac: Press
Cmd + Option + IOr right-click anywhere on the page → click Inspect → go to the Console tab
Mozilla Firefox
Windows/Linux: Press
Ctrl + Shift + IorF12Mac: Press
Cmd + Option + IOr right-click → Inspect → go to the Console tab
Microsoft Edge
Windows/Linux: Press
Ctrl + Shift + IorF12Mac: Press
Cmd + Option + IOr right-click → Inspect → navigate to the Console tab
Safari (Mac only)
Go to Safari > Preferences > Advanced
Check the box for “Show Develop menu in menu bar”
Then press
Cmd + Option + Ior use Develop > Show JavaScript Console
By providing this information, you help us diagnose and resolve the issue faster. Thank you!