Support Board

Date/Time: Tue, 27 Jan 2026 13:20:52 +0000

Custom Chart Builder: version 2870

[2026-01-27 09:58:25] #1 [Go To First Post]
User907968 - Posts: 862
Custom chart builder in version 2870 appear to break compatibility with studies compiled on earlier versions. Studies appears to load correctly, but in some confgurations fail silently - the chart is blank and no error messages are emitted (to log) to indicate a failure. With a debugger attached, I consistently observe access violations originating from methods of s_CustomChartBarInterface, including GetPersistentInt, GetPersistentFloat, GetPersistentDouble, FormattedEvaluate and GetInput. In all cases, the failures appear to stem from interactions that depend on the internal m_p_LoadingDataObject pointer. Representative exceptions observed: Exception thrown at 0x00000001404D3402 in SierraChart_64.exe: 0xC0000005: Access violation reading location 0xFFFFFFFFFFFFFFFF. Exception thrown: read access violation. this was 0xFFFFFFFFFFFFFFE7. These exceptions repeat across multiple calls and functions, indicating an invalid internal object pointer rather than an isolated logic error. In version 2870, a new member (Internal_GetPersistentPointer) is inserted before m_p_LoadingDataObject, resulting in m_p_LoadingDataObject having a different byte offset compared to earlier versions.

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