Prashant, this may be triggered by the packageVersion="10.2.30.38" from ptc-creo-view-extension.zip\metadata.xml.
You have the below alternatives :
1 ) Unzip ptc-creo-view-extension.zip, update metadata.xml to packageVersion="10.2.X", recreate the archives back, remove already imported files from TWX, re-import.
2 ) Remove imported files from TWX, download latest PTC Windchill Extension and import it in TWX.
Let me know if this helps, Horia.