sheets2pdf produces 0-byte PDF files (RvtExporter v17.1.1)

[FaranIdo]

Description

The sheets2pdf option in RvtExporter.exe creates PDF files with correct filenames but 0-byte file size. The converter reports success, identifies all sheets correctly, and progresses to 100% — but no actual PDF content is written.

Environment

• RvtExporter version: DDC Revit Community 17.1.1
• OS: Windows Server (fresh install)
• Test file: racbasicsampleproject.rvt (Autodesk Revit sample project)
• VC++ Redistributable: Installed (2015-2022 x64)

Steps to Reproduce

RvtExporter.exe "C:\Downloads\racbasicsampleproject.rvt" sheets2pdf

Expected Behavior

6 PDF files with rendered sheet content in SHEETS_PDF_racbasicsampleproject_rvt/ folder.

Actual Behavior

6 PDF files created with correct names but all 0 bytes:

0  Sheet A001 - Title Sheet 959513.pdf
0  Sheet A101 - Site Plan 959138.pdf
0  Sheet A102 - Plans 382620.pdf
0  Sheet A103 - Elevations Sections 958187.pdf
0  Sheet A104 - Elev. Sec. Det. 503704.pdf
0  Sheet A105 - Elev.  Stair Sections 958254.pdf

Console Output (no errors reported)

===========================================
         DataDrivenConstruction
         DDC Revit Community
         Version: 17.1.1
===========================================

------ File: C:\Downloads\racbasicsampleproject.rvt
------- Started Loading BimRv file...
------- Started Loading Nested Databases...
Progress: 100.00%
------- Started Loading Elements...
Progress: 100.00%
------- Stopped
------- Started Export Sheets to PDF...
Progress: 0.00%
...
Progress: 100.00%
-------- Sheets folder: C:\Downloads\SHEETS_PDF_racbasicsampleproject_rvt
------ The conversion has been completed!

Options Tested (all produce 0-byte PDFs)

Command	Result
RvtExporter.exe file.rvt complete bbox room schedule sheets2pdf	0 bytes
RvtExporter.exe file.rvt sheets2pdf -no-collada -no-xlsx	0 bytes
RvtExporter.exe file.rvt standard sheets2pdf -no-collada	0 bytes
RvtExporter.exe file.rvt basic sheets2pdf	0 bytes
RvtExporter.exe file.rvt output.dae output.xlsx sheets2pdf	0 bytes
Top-level RvtExporter.exe (outside datadrivenlibs)	0 bytes

Notes

• All other export features work correctly: XLSX (1.1 MB), DAE (11.4 MB), IFC (37.7 MB), Schedules (8 XLSX files ~400KB each)
• PDF-related DLLs are present in datadrivenlibs/: TD_PdfExport_26.8_17.tx, TD_Pdfium.dll, TD_PDFToolkit_26.8_17.dll, RxPdfToRasterServices_26.8_17.tx
• The converter correctly identifies all 6 sheet names and Revit element IDs
• No error messages in console output — the export appears to succeed silently