---
title: "PSPDFKit Resource Issue"
canonical_url: "https://www.nutrient.io/guides/ios/faq/incorrect-bundle-version/"
md_url: "https://www.nutrient.io/guides/ios/faq/incorrect-bundle-version.md"
last_updated: "2026-05-15T19:10:05.040Z"
description: "Solutions for common issues and errors in Nutrient iOS SDK with debugging tips and workarounds."
---

While running your app after updating PSPDFKit, you may encounter a popover saying that the version of the `PSPDFKit.bundle` you’re using does not match the version expected in PSPDFKit. This is an Xcode problem and is not caused by PSPDFKit.

When you see this happening, deleting Xcode’s `Derived Data`, located at `~/Library/Developer/Xcode/DerivedData`, will solve the problem.

---

## Related pages

- [Version String Enforcements](/guides/ios/announcements/version-string-enforcements.md)
- [Error 999](/guides/ios/pspdfkit-instant/error-999.md)
- [Sqlite Warnings](/guides/ios/troubleshooting/sqlite-warnings.md)
- [Undefined Symbols Error](/guides/ios/usage-issues/undefined-symbols-error.md)
- [Pspdfkitbundle Issues](/guides/ios/configuration-issues/pspdfkitbundle-issues.md)