Released: Apr 26, 2026

Updates in V26.4

Fixes

• Fixed incorrect recalculation of Actual Work timephased data when changing resource base calendar and adding exceptions.
• Fixed incorrect calculation of summary tasks after modification of Task.Finish.
• Fixed incorrect cascading recalculation of '% complete' and '% work complete' fields.
• Fixed issue where actual work distribution is changed when calendar exception is added to the calendar.
• Fixed issue with reading of values of enterprise extended attribute with type = Cost for the specific...

Released: Mar 29, 2026

Updates in V26.3

Fixes

• Fixed CalendarException.ToDate property setter logic.
• Fixed error when writing EarnedValueMethod and PhysicalPercentComplete fields to MPP format.
• Incorrect calculation of formulas with absent date field values.
• Activity Codes and User Defined Fields are not read when project is read from Primavera DB.

Released: Feb 28, 2026

Updates in V26.2

Features

• Added API to set globalized values of 'True' and 'False' literals in formulas.
• Added the ability to specify a Project's localization-specific settings.

Fixes

• Fixed logic of ProjDateValue formula function in some cases.
• Fixed infinite loop when saving the specific file.
• Fixed incorrect generation of timephased data when assignment baseline is added.
• Fixed IndexOutOfRangeException when assigning a calendar where Tuesday is non-working.

Released: Jan 29, 2026

Updates in V26.1

Features

• Added public API for customizing task links color when rendering the Gantt Chart view.

Fixes

• Summary task material assignment TimephasedData not refreshed on duration change.
• Fixed incorrect behavior of MS Project when working with formula-calculated extended attributes in project created by Aspose.Tasks.
• Fixed reading of task-specific calendars from Primavera DB.
• Fixed issue where CalculationType for OutlineCode is None in some cases when project is read from MPP file.

Released: Dec 26, 2025

Updates in V25.12

Fixes

• Timephased data for summary material resource assignment not recalculated after duration change.
• Fixed issue where Calendar.PrimaveraProperties is null for the specific calendar.
• Fixed issue where PrimaveraProperties are not filled when reading a project from Primavera DB.
• Fixed issue with Project Title and Date rendering in Page Legend section of Gantt Chart.
• Fixed issue where values of formula-calculated extended attributes are not saved properly to MPP format.

Released: Nov 29, 2025

Updates in V25.11

Features

• Added support for reading of calendar-specific "Hours per Day" setting from Primavera formats.
• Added support for reading of the "Define Critical Activities" option from Primavera formats and initialization of "Task.IsCritical" flag.
• Added an API to allow reading projects' Uids and Names from Primavera DB.
• Added the ability to set negative baseline cost.

Fixes

• Fixed incorrect baseline cost timephased data when assignment's calendar is different from baseline calendar.
• Fixed calculations...

Released: Sep 28, 2025

Updates in V25.9

Fixes

• Fixed issue where ResourceAssignment.GetTimephasedData method is not generating zero TD between Stop and Resume dates for TimephasedDataType.AssignmentWork.
• Fixed issue where ResourceAssignment.GetTimephasedData doesn't cut the resulting timephased data items according to the passed start/end argument.
• Fixed processing of baselines' TD when it contains work intervals on non-working time according to the assignment's calendar.
• Fixed incorrect logic of GetTimephasedData method for baseline...

Released: Aug 21, 2025

Updates in V25.8

Features

• Added auto-correction of calendar names when opening file with duplicated calendar names.

Fixes

• Fixed incorrect logic of Assignment.GetTimephasedData method for assignments of a material resource.
• Fixed incorrect writing of timephased data when timephased work is added for non-working day.
• Fixed exception when importing a project from XER file when WBS and Task entities have the same wbs_id and task_id.
• Fixed reading of real-numbered values of FreeSlack, TotalSlack properties from XER...

Released: Jul 26, 2025

Updates in V25.7

Features

• Added support for the scenario when an existing VBA module is deleted from MPP file.
• Added support for reading of 'Mandatory start' and 'Mandatory finish' constraint types from Primavera formats.

Fixes

• Fixed issue where updated source code of VbaModule is not shown when opening the resulting MPP in MS Project.
• Fixed incorrect reading of tasks hierarchy from XER format v25.5.
• Fixed logic of GetTimephasedWork method for baseline work.
• Fixed reading of the specific MPP file with VBA...

Released: Jun 30, 2025

Updates in V25.6

Features

• Added the ability to add a new VBA module to a project with existing VBA modules.
• Implemented the updating of VBA source code for the existing VBA modules in MPP file.
• Added VbaModuleType to public API.
• Added rendering of "Title Horizontal" and "Title Vertical" gridlines of Gantt chart.

Fixes

• Fixed VBA Forms - Project and ClassModule are not included in VbaProject.Modules.