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Openstudioapp 1.11.1 hangs at "Loading Library Files" after installation #898

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Description

@sborman

Issue overview

Openstudioapp 1.11.1 hangs at "Loading Library Files" after installation.

Current Behavior

Launching /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app on MacOS 26.7.1 hangs at the following message:

Image

The app UI never starts up as it never gets past this screen.
Executing from the Application folder with DEBUG set yields the following

`% OPENSTUDIO_APPLICATION_DEBUG=1 ./OpenStudioApp.app/Contents/MacOS/OpenStudioApp
[OpenStudioApp.main] <-2> main received argc=1 arguments
[OpenStudioApp.main] <-2> Argument 0=./OpenStudioApp.app/Contents/MacOS/OpenStudioApp
[openstudio.OSAppBase] <-2> Measures dir: /Users/sborman/OpenStudio/Measures
[OpenStudioApp] <-2> setDViewPath called with t_dviewPath = ''.
[OpenStudioApp] <-2> setDViewPath: m_dviewPath = ''.
[OpenStudioApp] <-2>

m_currLang=[en]

Debug: Trying to change language from ' "en" ' to ' "en" '. ((null):0, (null))
Debug: translationFolder= "/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/translations" ((null):0, (null))
Debug: m_qtTranslator ok ((null):0, (null))
Debug: m_qtBaseTranslator ok ((null):0, (null))
Debug:

NO TRANSLATOR NEEDED for lang = "English"

((null):0, (null))
[OpenStudioApplicationPathHelpers] <-2> getOpenStudioApplicationPath, info.dli_fname = '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[PathHelpers] <-2> completeAndNormalize: result = /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp
[ApplicationPathHelpers] <-2> getOpenStudioApplicationPath, found '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[OpenStudioApplicationPathHelpers] <-2> getOpenStudioApplicationPath, info.dli_fname = '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[PathHelpers] <-2> completeAndNormalize: result = /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp
[ApplicationPathHelpers] <-2> getOpenStudioApplicationPath, found '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[OpenStudioApplicationPathHelpers] <-2> getOpenStudioApplicationModule, info.dli_fname = '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[PathHelpers] <-2> completeAndNormalize: result = /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp
[ApplicationPathHelpers] <-2> getOpenStudioApplicationModule, found '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[OpenStudioApplicationPathHelpers] <-2> Searching for CLI in '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/openstudio'
[PathHelpers] <-2> completeAndNormalize: result = /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/openstudio
[OpenStudioApplicationPathHelpers] <-2> Found CLI at '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/openstudio'
[PathHelpers] <-2> completeAndNormalize: result = /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/openstudio
[openstudio.OSAppBase] <-2> Starting measure manager server at http://localhost:49936
[openstudio.OSAppBase] <-2> Command: /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/openstudio measure -s 49936
[OpenStudioApplicationPathHelpers] <-2> getOpenStudioApplicationPath, info.dli_fname = '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[PathHelpers] <-2> completeAndNormalize: result = /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp
[ApplicationPathHelpers] <-2> getOpenStudioApplicationPath, found '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[OpenStudioApplicationPathHelpers] <-2> getOpenStudioApplicationPath, info.dli_fname = '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[PathHelpers] <-2> completeAndNormalize: result = /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp
[ApplicationPathHelpers] <-2> getOpenStudioApplicationPath, found '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[OpenStudioApplicationPathHelpers] <-2> getOpenStudioApplicationPath, info.dli_fname = '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[PathHelpers] <-2> completeAndNormalize: result = /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp
[ApplicationPathHelpers] <-2> getOpenStudioApplicationPath, found '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[OpenStudioApplicationPathHelpers] <-2> getOpenStudioApplicationPath, info.dli_fname = '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[PathHelpers] <-2> completeAndNormalize: result = /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp
[ApplicationPathHelpers] <-2> getOpenStudioApplicationPath, found '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[OpenStudioApplicationPathHelpers] <-2> getOpenStudioApplicationPath, info.dli_fname = '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[PathHelpers] <-2> completeAndNormalize: result = /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp
[ApplicationPathHelpers] <-2> getOpenStudioApplicationPath, found '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[OpenStudioApplicationPathHelpers] <-2> getOpenStudioApplicationPath, info.dli_fname = '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[PathHelpers] <-2> completeAndNormalize: result = /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp
[ApplicationPathHelpers] <-2> getOpenStudioApplicationPath, found '/Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/MacOS/OpenStudioApp'
[openstudio.osversion.VersionTranslator] <-2> Starting translation from Version 3.11.0.
[OpenStudioApp.main.QFont] <-2> Adding font worked
[OpenStudioApp.main] <-1> LibraryExecutablesPath: /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/libexec
[OpenStudioApp.main] <-1> DataPath: /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents
[OpenStudioApp.main] <-1> TranslationsPath: /Applications/OpenStudioApplication-1.11.1/OpenStudioApp.app/Contents/translations
[openstudio.osversion.VersionTranslator] <-2> Initial model has 943 objects.
[openstudio.osversion.VersionTranslator] <-2> Final model has 943 objects in IDF form.
[utilities.idf.Workspace] <-2> Workspace::isValid called.
[openstudio.osversion.VersionTranslator] <-2> Final model has 943 objects in Model form.
[openstudio.osversion.VersionTranslator] <-2> Starting translation from Version 3.11.0.
[openstudio.osversion.VersionTranslator] <-2> Initial model has 732 objects.
[openstudio.osversion.VersionTranslator] <-2> Final model has 732 objects in IDF form.
[utilities.idf.Workspace] <-2> Workspace::isValid called.
[openstudio.osversion.VersionTranslator] <-2> Final model has 732 objects in Model form.
`

Expected Behavior

The application will start cleanly.

Steps to Reproduce

  1. Install Openstudioapp from dmg installer for MacOS (ARM)
  2. Run the app.

Possible Solution

Details

Environment

MacOS 26.7.1
Openstudioapp 1.11.1

Context

I'd like to get openstudio running to do modeling on a single family residence project with sketchup.

Activity

  1. added
    TriageIssue needs to be assessed and labeled, further information on reported might be needed
    on Oct 19, 2026
  2. sborman commented on Oct 19, 2026

    @sborman
    Author

    I just installed 1.12.0-rc2 and the issue reported here appears to be resolved.

  3. brgix commented on Oct 19, 2026

    @brgix

    Had the very same issue with the MacOS 27.0.1. App 1.12.0-rc2 works like a charm.

  4. gnguyen15 commented on Oct 20, 2026

    @gnguyen15

    I had the same issue too.

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