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Fishstrap

Fishstrap Issues

"[System.IO.FileNotFoundException](System.IO.FileNotFoundException: Could not load file or assembly..."

Section titled “"[System.IO.FileNotFoundException](System.IO.FileNotFoundException: Could not load file or assembly..."”

Causes

Section titled “Causes”
  • Missing .NET Desktop Runtime 6.0
  • Corrupted or incomplete .NET installation

Solution

Section titled “Solution”

  1. Check installed runtimes:
    Open Command Prompt and run:

    pwsh
    dotnet --list-runtimes

    Look for Microsoft.WindowsDesktop.App 6.0.x. If missing, the runtime isn’t installed correctly.

  2. Install .NET Desktop Runtime 6.0:
    Download and install .NET Desktop Runtime 6.0 (not just ”.NET Runtime”) from:
    https://dotnet.microsoft.com/en-us/download/dotnet/6.0

"System.Net.Http.HttpRequestException:..."

Section titled “"System.Net.Http.HttpRequestException:..."”

Causes:

Section titled “Causes:”
  • Roblox is down.
  • Using a VPN, Cloudflare WARP, or proxy.
  • Government censorship or network restrictions.
  • Incorrect Deployment settings in Fishstrap

Solution

Section titled “Solution”
  1. Check if Roblox is working by visiting the Roblox Status page.
  2. Disable/Enable VPNs, or proxies: Check if the issue persists after you disable/enable your VPN.
  3. Check Deployment settings: In Fishstrap, go to the Deployment tab → Set Channel to Production and Automatic channel change action to “Never change”.

My Exploit/Hack doesn’t work!

Section titled “My Exploit/Hack doesn’t work!”

We at Fishstrap take this very seriously. Please follow this link for further help.

FFlags are not working

Section titled “FFlags are not working”

Causes:

Section titled “Causes:”
  • Using flags not on Roblox’s official allowlist
  • Expecting Studio behavior in the client

Solution:

Section titled “Solution:”

  1. Only use allowlisted FastFlags in the client:
    As of late 2025, Roblox enforces a strict allowlist for client-side FastFlags.
    See the full list here.

  2. Studio has no allowlist:
    All FastFlags still work in Roblox Studio, but not in the client unless explicitly allowed.

Global settings tab is greyed out

Section titled “Global settings tab is greyed out”

Causes:

Section titled “Causes:”
  • Fishstrap hasn’t launched Roblox yet
  • Configuration not initialized

Solution:

Section titled “Solution:”
  1. Launch any game through Fishstrap at least once - this initializes internal settings.
  2. Close Roblox and reopen the Fishstrap settings - global settings should now be editable.

Stuck on “Waiting for data…”

Section titled “Stuck on “Waiting for data…””
  1. Click Cancel on the loading screen.
  2. Rejoin the same game - this usually resolves temporary asset loading issues.

“The JSON you’ve entered does not appear to be valid.”

Section titled ““The JSON you’ve entered does not appear to be valid.””

Causes:

Section titled “Causes:”
  • Incorrect JSON syntax
  • Misformatted FastFlag entries

Solution:

Section titled “Solution:”

Use a JSON verification tool like JSONLint to validate your JSON.