--- title: Troubleshooting | TestFit Knowledge Base description: Articles covering how to troubleshoot common TestFit Issues. --- [Skip to content](https://support.testfit.io/knowledge/troubleshooting#main-content) [![](https://support.testfit.io/hs-fs/hubfs/primary%20wordmark.png?width=150&height=113&name=primary%20wordmark.png)](https://testfit.io/) Open main navigation Close main navigation - - [Contact us](https://support.testfit.io/knowledge/kb-tickets/new) [Contact us](https://support.testfit.io/knowledge/kb-tickets/new) Welcome to the TestFit Knowledge Base - There are no suggestions because the search field is empty. 1. [TestFit Knowledge Base](https://support.testfit.io/knowledge) 2. [Troubleshooting](https://support.testfit.io/knowledge/troubleshooting) # Troubleshooting Articles covering how to troubleshoot common TestFit Issues. - [Whitelisting Domains](https://support.testfit.io/knowledge/whitelisting-domains) - [Generating Log Files for Troubleshooting (Windows and Mac)](https://support.testfit.io/knowledge/troubleshooting/generating-windows-logs-for-troubleshooting) - [Generate an installation log in OSX to troubleshoot install issues in a Mac.](https://support.testfit.io/knowledge/troubleshooting/gathering-an-installation-log-on-osx) - [Where to find TestFit logs](https://support.testfit.io/knowledge/where-to-find-testfit-logs) - [Submit Feedback](https://support.testfit.io/knowledge/submit-feedback) - [Saving a Deal](https://support.testfit.io/knowledge/testfit-portal/saving-a-deal) See less ▼ ## Issues - [Why does TestFit close immediately after it launches?](https://support.testfit.io/knowledge/troublsehooting/why-does-testfit-close-immediately-after-it-launches) - [Issue: Corner units do not get placed](https://support.testfit.io/knowledge/troubleshooting/issue-corner-units-do-not-get-placed) - [Issue: Buildings disappear when other buildings are moved.](https://support.testfit.io/knowledge/troubleshooting/issue-buildings-disappear-when-other-buildings-are-moved) - [Issue: Underground parking stalls are not counted](https://support.testfit.io/knowledge/troubleshooting/issue-underground-parking-stalls-are-not-counted) - [Issue: My model is running slowly](https://support.testfit.io/knowledge/troubleshooting/issue-my-model-is-running-slowly) - [Issue: Background image doesn't show in exported views](https://support.testfit.io/knowledge/troubleshooting/issue-background-image-doesnt-show-in-exported-views) - [Issue: Nothing happens when I try to open a TestFit file](https://support.testfit.io/knowledge/troubelshooting/issue-nothing-happens-when-i-try-to-open-a-testfit-file) - [Issue: Site Access is not created when you add Site Access to the site](https://support.testfit.io/knowledge/troubleshooting/issue-site-access-is-not-created) - [Issue: TestFit fails to launch](https://support.testfit.io/knowledge/troubleshooting/issues/testfit-crashes-at-launch) - [Issue: Geometry in exported .dxf is very small, and the units are incorrect.](https://support.testfit.io/knowledge/issue/exported-dxf-very-small-wgs84) - [Issue: Imported unit size is too big](https://support.testfit.io/knowledge/issue-imported-unit-size-is-too-big) - [Issue: Geometry not displayed](https://support.testfit.io/knowledge/issue-geometry-not-displayed) - [Issue: Can't delete an element](https://support.testfit.io/knowledge/issue-cant-delete-an-element) - [Issue: TestFit double counts modules](https://support.testfit.io/knowledge/troubleshooting/issue-testfit-double-counts-modules) - [Issue: Nothing happens when launching TestFit](https://support.testfit.io/knowledge/issue-nothing-happens-when) - [Issue: TestFit does not place single-loaded parking in a surface lot](https://support.testfit.io/knowledge/troubleshooting/issue-testfit-does-not-place-single-loaded-parking-in-a-surface-lot) - [Issue: Inserting importing GIS data from ArcGIS](https://support.testfit.io/knowledge/issue-inserting-gis-information) - [Issue: File size of exported PDFs are much larger than they used to be](https://support.testfit.io/knowledge/troubleshooting/issues/issue-exported-pdfs-are-much-larger-than-be) - [Issue: Restore from Crash](https://support.testfit.io/knowledge/restore-from-crash) - [Issue: Adding a space to an industrial building changes the building and parking](https://support.testfit.io/knowledge/troubleshooting/issue-adding-a-space-to-an-industrial-building) - [Issue: Unit count is not correct](https://support.testfit.io/knowledge/issue-unit-count-is-not-correct) - [Issue: Townhome or rowhouse does not change when the number of levels is changed.](https://support.testfit.io/knowledge/troubleshooting/issue-townhome-or-rowhouse-does-not-change) - [Issue: Cannot pin a unit](https://support.testfit.io/knowledge/issue-cannot-pin-a-unit) See less ▼ ## Errors - [Error: TestFit stops at "Validating Installation" while attempting to install](https://support.testfit.io/knowledge/error-testfit-stops-at-validating-installation-while-attempting-to-install) - [Error: "SSL peer certificate or SSH remote key was not OK" when signing in](https://support.testfit.io/knowledge/troubleshooting/ssl-certificate) - [Error: "Your graphics system is not supported by TestFit"](https://support.testfit.io/knowledge/troubleshooting/error-your-graphics-system-is-not-supported-by-testfit) - [Error: Site too large](https://support.testfit.io/knowledge/troubleshooting/error-large-site-not-solving) - [Error: Small site not solving](https://support.testfit.io/knowledge/troubleshooting/small-site-not-solving) - [Error: TestFit integrations error](https://support.testfit.io/knowledge/troubleshooting/error-method-not-found) - [Error: "Failed to read selected RSD file: Failed to load file"](https://support.testfit.io/knowledge/troubleshooting/error-failed-to-read-selected-rsd-file) - [Error: LoadLibrary failed with error 87: The parameter is incorrect](https://support.testfit.io/knowledge/error87) - [Error: "Auth0 request failed" / Code 500](https://support.testfit.io/knowledge/troubleshooting/error-auth0-request-failed) - [Error: "The installation failed" when installing on OSX](https://support.testfit.io/knowledge/troubleshooting/error-the-installation-failed-when-installing-on-osx) - [Error: "Login error: The current user account has been suspended. Please contact support."](https://support.testfit.io/knowledge/troubleshooting/error-login-error-the-current-user-account-has-been-suspended.-please-contact-support) - [Error: "Error writing to file."](https://support.testfit.io/knowledge/error-error-writing-to-file) - [Error: External Tools - Add-in Assembly Not Found](https://support.testfit.io/knowledge/error-add-in-assembly-not-found) See less ▼ - [Getting Started](https://support.testfit.io/knowledge/getting-started#main-content) - [Interface](https://support.testfit.io/knowledge/getting-started#interface) - [Setting up a Deal](https://support.testfit.io/knowledge/getting-started#setting-up-a-deal) - [Site Design & Configuration](https://support.testfit.io/knowledge/getting-started#site-design-configuration) - [Fundamentals](https://support.testfit.io/knowledge/fundamentals#main-content) - [Regions](https://support.testfit.io/knowledge/fundamentals#regions) - [Key Functions](https://support.testfit.io/knowledge/fundamentals#key-functions) - [Roads](https://support.testfit.io/knowledge/fundamentals#roads) - [Site Development](https://support.testfit.io/knowledge/site-development#main-content) - [Mass-Based](https://support.testfit.io/knowledge/site-development#mass-based) - [Housing - High Density & Gurban](https://support.testfit.io/knowledge/site-development#housing-high-density-gurban) - [Housing - Low Density & Subdivision](https://support.testfit.io/knowledge/site-development#housing-low-density-subdivision) - [Housing - Garden](https://support.testfit.io/knowledge/site-development#housing-garden) - [Industrial](https://support.testfit.io/knowledge/site-development#industrial) - [Datacenters](https://support.testfit.io/knowledge/site-development#datacenters) - [Generative Design](https://support.testfit.io/knowledge/site-development#generative-design) - [Parking](https://support.testfit.io/knowledge/site-development#parking) - [Retail](https://support.testfit.io/knowledge/site-development#retail) - [Core-Based](https://support.testfit.io/knowledge/site-development#core-based) - [Web App](https://support.testfit.io/knowledge/web-app#main-content) - [Deal Pipeline & Asset Management](https://support.testfit.io/knowledge/web-app#deal-pipeline-asset-management) - [Deal Actions & Edits](https://support.testfit.io/knowledge/web-app#deal-actions-edits) - [Reports](https://support.testfit.io/knowledge/web-app#reports) - [Quantities & Costs](https://support.testfit.io/knowledge/web-app#quantities-costs) - [Pro Forma](https://support.testfit.io/knowledge/web-app#pro-forma) - [MCP](https://support.testfit.io/knowledge/mcp) - [Reports & Exporting](https://support.testfit.io/knowledge/reports-exporting#main-content) - [PDF Exports](https://support.testfit.io/knowledge/reports-exporting#pdf-exports) - [SketchUp Export](https://support.testfit.io/knowledge/reports-exporting#sketchup-export) - [TestFit to Revit](https://support.testfit.io/knowledge/reports-exporting#testfit-to-revit) - [Account Management](https://support.testfit.io/knowledge/account-management#main-content) - [Administration](https://support.testfit.io/knowledge/account-management#administration) - [Account](https://support.testfit.io/knowledge/account-management#account) - [Latest Release](https://support.testfit.io/knowledge/latest-release#main-content) - [2026](https://support.testfit.io/knowledge/latest-release#2026) - [2025](https://support.testfit.io/knowledge/latest-release#2025) - [2024](https://support.testfit.io/knowledge/latest-release#2024) - [2023](https://support.testfit.io/knowledge/latest-release#2023) - [2022](https://support.testfit.io/knowledge/latest-release#2022) - [Beta](https://support.testfit.io/knowledge/latest-release#beta) - [FAQ](https://support.testfit.io/knowledge/faq) - [Troubleshooting](https://support.testfit.io/knowledge/troubleshooting#main-content) - [Issues](https://support.testfit.io/knowledge/troubleshooting#issues) - [Errors](https://support.testfit.io/knowledge/troubleshooting#errors) [![Chill listening crop-3](https://support.testfit.io/hs-fs/hubfs/primary%20wordmark.png?width=124&height=40&name=primary%20wordmark.png "Chill listening crop-3")](http://testfit.io) Copyright © 2025, TestFit