Automation API error in exporting drawing in DXF format

[paat]

Hi, I'm getting a system error when trying to export existing drawing to dxf format. Error text:
Exception with message 'Memory is locked. (Exception from HRESULT: 0x8002000D (DISP_E_ARRAYISLOCKED))

Has anyone seen it? It doesn't happen with every drawing file.

 

[paat]

One more thing that the file export from the Alibre Design 2018.2 64bit UI works without issues.