FAQ

Rubber Duck Development (Rubber Ducks Development LLC) is a software studio that makes affordable alternatives to expensive FiveM scripts and development tools. We build resources we want to use on our own servers and share them with other server owners and creators. You can find our projects on GitHub.

We keep our prices low so that running a good server doesn’t cost a fortune. Each resource’s page shows its price, or “Price TBD” while we’re still deciding. Duck Studio costs $0.00, and its downloads don’t require an account.

No. Rubber Duck Development is not affiliated with, endorsed by or sponsored by Rockstar Games, Take-Two Interactive, Cfx.re (the FiveM and RedM team) or alt:V. Grand Theft Auto V, FiveM and alt:V are trademarks of their respective owners.

No. There are no analytics, ads, tracking cookies or third-party scripts, and the fonts are served from our own server. The Privacy Policy explains exactly what the site does handle.

Each resource uses the license in its GitHub repository. Duck Studio’s editor and installer use the MIT license, its modified renderer keeps the Unlicense, and bundled third-party components keep their own licenses (listed in THIRD_PARTY.md).

For MIT-licensed resources such as Duck Studio, yes. The MIT license lets you use, copy, modify, merge, publish, distribute, sublicense and sell copies, as long as you keep the copyright and license notice. A link back to us is appreciated but not required.

Paid products can be used and modified on servers you own or operate, including servers that make money, but they can’t be resold or shared. See section 2 of our Terms of Service.

Your server still has to follow the rules of the platform it runs on, such as the Cfx.re terms for FiveM servers, including their rules on monetization.

Duck Studio doesn’t claim any rights over what you make with it. Whether you can sell a pack depends on what is in it: you need the rights to your own artwork and models, and selling content for GTA V servers is governed by Rockstar’s and Cfx.re’s rules. Check those before you sell anything.

Yes. Use the suggestion form to write a short brief, then share it in our Discord. We can’t promise to build every request, but they help us decide what to make next.

Yes. Open an issue or a pull request on the resource’s GitHub repository. Duck Studio’s contributing guide lists the checks to run before you submit a change.

Click Buy on the resource’s page. You pay on Stripe’s secure checkout page, and as soon as the payment goes through you’re taken to your download page. You don’t need an account with us.

Stripe handles the payment, so we never see your full card details. Stripe also emails you a receipt.

Your download page is your personal link, so bookmark it. If you lose it, email director@mountainvalley.pro with your Stripe receipt and we’ll send it again.

Yes, if a product doesn’t work as described. Email director@mountainvalley.pro within 14 days of buying it, with your receipt and a description of the problem. We’ll try to fix it first, and if we can’t, we’ll refund you in full. The refund policy has the details.

Your download page always gives you the newest version of the product file we’ve published, at no extra cost.

Windows x64. The installer includes the .NET desktop runtime, so you don’t need to install anything else. Download DuckStudioSetup.exe from the Duck Studio page, or use the portable .zip and keep its runtime files next to DuckStudio.exe.

Only for full character previews. Asset-only previews, editing and exports work without it. To preview clothing on a full character, link your own GTA V installation in Settings. Duck Studio never downloads or redistributes game files.

Duck Studio’s EXE files don’t have a paid code-signing (Authenticode) certificate yet, so Windows SmartScreen may warn you about the first download. You can check that your file is the one we published: each release includes SHA256SUMS.txt. In PowerShell, run Get-FileHash .\DuckStudioSetup.exe and compare the result with the line for that file. If they match, choose More info and then Run anyway.

Only download Duck Studio from this site or from our GitHub Releases page.

Duck Studio checks our public GitHub release feed when it starts and every six hours. It always asks before installing, and it checks the update’s signature, size and SHA256 first. You can change this in Help > Update settings. Copies older than 2.1.2 need the feed address set once; the README explains how.

FiveM, alt:V, single-player DLC archives and raw game assets.

Ask in our Discord, or open an issue on the resource’s GitHub repository with the version you’re using and the steps that cause the problem. For anything else, email director@mountainvalley.pro.

Please report it privately through GitHub’s private vulnerability reporting instead of a public issue or Discord message. Include the affected version and steps to reproduce it. Our security policy has the details.