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pyRevit 6.5.3 fails to load Microsoft.CodeAnalysis 4.11.0.0 on Revit 2025.4.5 despite DLL being present

Status: Open.

#3479 In pyrevitlabs/pyRevit;

· te-tlay opened on Jul 8, 2026

[Bug]: CPython command execution fails with Int32.Parse FormatException on '3.12.3' in GetPythonDll (Revit 2025; engine test passes, real commands fail)

Status: Open.

#3478 In pyrevitlabs/pyRevit;

· StefanoDishes opened on Jul 7, 2026

[Bug]: Routes server -- Revit fatal crash on first HTTP request after pyRevit Reload

Status: Open.

#3473 In pyrevitlabs/pyRevit;

· kimust opened on Jul 5, 2026

[Bug]: Every command freezes Revit ~10 s in long sessions — per-click IronPython engine churn (cache misses after Reload) triggers blocking gen2 GCs

Status: Open.

#3472 In pyrevitlabs/pyRevit;

· cucuradu opened on Jul 5, 2026

[Bug]: Missing weakref_finalize.py in site-packages\urllib3\packages\backports

Status: Open.

#3471 In pyrevitlabs/pyRevit;

· maghfurrozak opened on Jul 3, 2026

[Bug]: pyRevit 6.5.3 does not load additional extension source

Status: Open.

#3464 In pyrevitlabs/pyRevit;

· guusgooskens opened on Jul 1, 2026

[Bug]: 6.5.3 CLI Engines missing

Status: Open.

#3459 In pyrevitlabs/pyRevit;

· Delta-RHU opened on Jun 29, 2026

[Bug]: SmartButton icons set via __selfinit__ do not update during reload in C# launcher

Status: Open.

Bug

#3424 In pyrevitlabs/pyRevit;

· Wurschdhaud opened on Jun 15, 2026

[Bug]: pyRevit 6.4.0 fails to load on Revit 2025.4 — Microsoft.CodeAnalysis 4.11.0 assembly not found (PublicKeyToken mismatch)

Status: Open.

Bug

#3415 In pyrevitlabs/pyRevit;

· rogueryder opened on Jun 7, 2026

Print Sheets - Include Viewports

New FeatureNew feature request [class->Implemented #{number}: {title}]New feature request [class->Implemented #{number}: {title}]

Status: Open.

#3414 In pyrevitlabs/pyRevit;

· kslifter opened on Jun 5, 2026

Convert Line Styles: “Delete Converted Style(s)” can crash Revit when Linework overrides still reference deleted style

Status: Open.

#3385 In pyrevitlabs/pyRevit;

· OmidBakhshaei opened on May 20, 2026

Print sheet button enhancements

New FeatureNew feature request [class->Implemented #{number}: {title}]New feature request [class->Implemented #{number}: {title}]

Status: Open.

#3365 In pyrevitlabs/pyRevit;

· nicolatornieri opened on May 7, 2026