Capella xhtml docgen feature that functioned prior to 6.1 update fails partially

[vepoblio]

After upgrading to capella 6.1 flawlessly I noticed that "Capella - XHTML Documentation Generation" feature fails partially but persistently after several repeated attempts, on both debian linux and windows10 deployments of Capella, and even after cleaning the workspace (-clean, -initialize, metadata), on every model I tried, mine but also including the vanilla samples. The xhtml generation functions well on same models with Capella 5. The failure manifests without severe error messages and generating only the index and header html files but nothing else (see the log and cfg attached too).

  /mnt/routers/Common/work/capella-ws/In-Flight Entertainment System With M2Doc/html-doc/output/In-Flight Entertainment System:
  total used in directory 5120 available 1.4 TiB
  drwxr-xr-x 2 vepo vepo    0 Mar 11 19:48 .
  drwxr-xr-x 2 vepo vepo    0 Mar 11 19:48 ..
  -rwxr-xr-x 1 vepo vepo  838 Mar 13 18:39 footer.html
  -rwxr-xr-x 1 vepo vepo  663 Mar 13 18:39 header.html
  -rwxr-xr-x 1 vepo vepo 1376 Mar 13 18:39 index.html
  -rwxr-xr-x 1 vepo vepo 2276 Mar 13 18:39 searchIndex.html
  -rwxr-xr-x 1 vepo vepo 1557 Mar 13 18:39 sidebar.html

capella.log capella.txt

[vepoblio]

[vepoblio]

The previous rev of the plugin was copied into the dropins folder by mistake, and apparently the incompability is very subtle in that it seems to function without reporting any error and even generates some files but obviously doesn't work.