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DataFlex 2026 Release Candidate 2 Release Notes

This page lists the specific list of changes in DataFlex 2026 between Release Candidate 1 and Release Candidate 2.

See What's New in DataFlex 2026 for all new features in DataFlex 2026.

See DataFlex 2026 Release Candidate 1 Changes for the specific list of changes between Beta 1 and Release Candidate 1.

Compatibility Notes

  • Web UI Server and Web UI FlexTron have been updated to version 1.0.51. The example workspaces now reference 1.0.51. We recommend upgrading workspaces to use the latest version of these packages.
  • The --project (-p) option of df-cli build has been removed. Use --target (-t) instead, which was previously documented as an alias for --project. The Studio passes --target and is unaffected; scripts and build pipelines that pass --project must be updated.

Changes

Package Manager + df-cli

  • A dependency override that points at a .sws file which does not exist now reports a clear error instead of silently falling back to downloading the package-server version.
  • Loading a workspace no longer fails when the optional Config.ws file is absent; optional defaults are used instead.
  • The workspace repair prompts now match what you chose: the wording of the first prompt has been corrected, and the follow-up message only mentions that errors remain "despite repair" when a repair was actually attempted.
  • Package descriptions authored with Windows line endings now render correctly; carriage returns no longer collapse a multi-line Markdown description into a single paragraph.
  • Local libraries now expose their package metadata in package details, the same way registry packages do.
  • Verbose compiler output now shows the full path of each file being compiled in addition to its name.
  • Error logging now includes context for failures that previously reported none.
  • Corrected the command-line help for df-cli package push and df-cli package details.
  • Command-line help now shows value placeholders consistently across commands.
  • Further reduced Studio lockups caused by calls from df-cli re-entering the Studio.
  • df-cli webapp can now determine the status of WebApp Server applications created with DataFlex versions before 26.0.

Studio

  • The Package Manager package zoom now lists all package metadata entries. Previously the list stopped as soon as a license.text entry was reached, hiding the entries after it.
  • Configure Workspace conditionals: the automatically generated Is$Win64 and Is$WebApp symbols are no longer written to the .sws file, conditionals are no longer added to the list twice, and symbol names are now compared without regard to casing.
  • The Open dialog now starts in the project's AppSrc folder.
  • Refreshing the Workspace Explorer now recalculates the workspace correctly, and removing a project from the workspace is now supported.
  • Creating a new project from a written-out .cfg file now preselects 64-bit.
  • The Web App Designer no longer renders its content twice.
  • The Excel Import Wizard now has its own icon in the Database menu and in the Table Explorer context menu.

Examples

  • Fixed a DDO constraint error when navigating to SelectCustomer in the WebOrderMobile example.
  • The tooltips of the WebOrderMobile charts now show the correctly formatted order total.
  • The order dates in the example data have been refreshed; they previously ended in January 2023 and now run through 19 August 2026. The Order Date Refresher tool now always includes both of the dates entered.

Installer

  • The Symbol Reference help file (SymbolReference.chm) is now shipped and installed alongside DataFlex.chm.
  • The Visual C++ redistributables have been renewed to version 14.51, and the prerequisite minimum has been raised to match, for x86, x64 and ARM64.
  • ARM64 installations no longer report an incorrect Visual C++ redistributable error, and a benign warning about a failed redistributable installation is no longer shown.
  • Corrected the initial current-workspace location written to the registry.
  • The DataFlex Reports demo files are now installed under the 26.0 folder instead of 25.2.

Compiler and Runtime

  • Fixed cRegex.Split returning incorrect results for regular expressions that contain capture groups.
  • Fixed the linker silently truncating large [Bitmaps] and [Icons] sections of the link configuration, which could result in incomplete resource linking or an "UNABLE TO ADD THE ICONS" error.