ICM Studio — Windows testing preview 3 (October 30, 2026)

Requires Lightroom Classic on 64-bit Windows 11 (Intel/AMD x64).
Extract the entire ZIP, then Lightroom: File > Plug-in Manager > Add; choose the .lrplugin folder. Open from File > Plug-in Extras with a photo selected.
Keep the bin folder and all its DLLs together. The .NET runtime is included.
Remove/disable the Mac copy of the same plugin before adding this Windows copy.

These Windows executables are unsigned. Apple's notarization does not apply to Windows. Windows integration and TIFF codec behavior require validation before a public release.

Paths containing %, ! or quotation marks are rejected before execution; use a different folder. Originals are never overwritten. Successful TIFFs are retained if catalog import fails.
See WINDOWS-TEST-CHECKLIST.md in the source project for acceptance tests.

Preview 2 fixes the unsupported RGB48 screen-preview color conversion. Remove the entire older plugin folder before installing this version; do not mix its DLLs with an earlier download.

Preview 3: standard Show Original / Show Effect button; generated photos are added to and selected in ICM Studio Results, with saved file paths in the completion message. Existing folder stacking is preserved. The view filter is cleared when showing results.
