Polaris Office on the Asus Transformer TF-101 saves files only as "bad" .doc files compatible with newer versions of MS Office only.

Fortunately the files can be opened with Abiword, so you can use it to convert the files for reading with LibreOffice (OpenOffice).

ian@is08 ~ $ file Desktop/Sheila.doc
Desktop/Sheila.doc: CDF V2 Document, corrupt: Cannot read summary info
ian@is08 ~ $ abiword --to=odt Desktop/Sheila.doc 
ian@is08 ~ $ file Desktop/Sheila.odt
Desktop/Sheila.odt: OpenDocument Text