• Crash Reporting — Updated crash reporter for compatibility with macOS Tahoe 26.3.
• Interval Tracking — Interval tracking values are no longer exported incorrectly at some date scales.

• Stability — Addressed a crash that could occur downloading a project from a server.

OmniPlan 4.10 improves compatibility with newer versions of macOS.

• Omni Automation — Improved support for setting custom data values via scripting.
• OS Compatibility — Updated accuracy of alert presented when OmniPlan detects it is running on an OS it has not yet been updated to support.
• Date Pickers — Date pickers are once again displayed adjacent to date field.
• Stability — Fixed a leveling crash that could be triggered by a dependency loop.

• Export — Fixed a bug that enabled access to Microsoft Project MPP and XML export options in the Standard edition of OmniPlan (these export options require OmniPlan Pro).
• Shortcuts — Fixed a bug that enabled running Shortcut actions which require scripting features in the Standard edition of OmniPlan (AppleScript and Omni Automation scripting require OmniPlan Pro).

• Stability — Fixed a scheduling crash that could occur when resource efficiency for an assigned resource is zero.

OmniPlan 4.9.3 fixes leveling of prioritized tasks and a collaboration-related sync issue.

• In-App Purchases — In-app purchases have been streamlined to offer perpetual OmniPlan 4 licenses for all new purchases.
• Collaboration — Additional fix for issue that could cause end dates to become start dates, when changing scheduling from Automatic to Manual at the same time as changing from ASAP to ALAP, during initial creation of a task.
• Leveling — Fixed lower-priority prerequisites blocking leveling of dependent tasks, which caused unexpected leveling results. Prerequisite tasks will now level using an effective priority derived from dependent tasks.

OmniPlan 4.9.2 resolves several issues, including Reports layout, an exporting issue that could result in data loss, improvements for both Constraints and Leveling, and more.

• Collaboration — Changes to Project Granularity made on another device are now immediately displayed in the Inspector.
• Constraints — Constraints that are too close together now offer a solution.
• File Format — Fixed an issue that could result in auto-saved documents using the last selected export format.
• Leveling — Milestones that occur at the same time, and which are assigned to the same group member, will no longer affect computed dates of dependent tasks.
• Menus — Fixed several menu items that were never enabled.
• Reports — Fixed Gantt Chart report headers.
• Reports — Fixed Resource Timeline report.

• Collaboration — Fixed issue that could cause end dates to become start dates, when changing scheduling from Automatic to Manual at the same time as changing from ASAP to ALAP, while syncing with a server.
• Collaboration — Fixed issue that could result in milestones unexpectedly converting to manual dates, when refreshing calendar syncing.
• Collaboration — Fixed issue using Revert to Server Copy that could cause OmniPlan to become non-responsive.
• Collaboration — Fixed issue with changelog truncation logic, to prevent possible data loss.
• Constraints — Fixed groups not correctly presenting violations for overlapping constraints.
• Omni Automation — Omni Automation Plug-in icons now use OmniPlan yellow, instead of OmniGraffle green.
• Writing Tools — Writing Tools are now available for the title of a selected row, but are not available when multiple rows are selected, to avoid unwanted changes.
• Collaboration — Removed non-functional Google Calendar Server option.
• Quick Look Preview — Quick Look has been updated to support macOS 15 Sequoia.

OmniPlan 4.9 improves compatibility with newer versions of macOS.

• OS Compatibility — Improved compatibility with newer versions of macOS.
• Scheduling — Addressed a recently introduced scheduling bug that could cause unexpected leveling behavior when off-time is scheduled for a resource.