V1.0 fails on Lillipop - how to fix?

[Radoom]

Hi all, old stuff, yes, I know. Got reasons, though.
Looking for a solution to "transparently" mount SMB shares so that they appear for all apps on the device as if they were folders on the device itself; i.e. any "file managers" that can show SMB shares inside themselves only are not a solution here.
For that, tried this package, an archived V1.0 which should support Android 5.0. Installation works fine, but app crashes on startup. Catlog tells me that it misses below libraries, but they are definitely in the apk and get installed, i.e. these are on the device after installation in this place

/data/app/com.google.android.sambadocumentsprovider-1/lib/arm/libgse-samba4.so
/data/app/com.google.android.sambadocumentsprovider-1/lib/arm/liblibsmb-samba4.so
/data/app/com.google.android.sambadocumentsprovider-1/lib/arm/libsamba_client.so
/data/app/com.google.android.sambadocumentsprovider-1/lib/arm/libsecrets3-samba4.so
/data/app/com.google.android.sambadocumentsprovider-1/lib/arm/libsmbclient.so
/data/app/com.google.android.sambadocumentsprovider-1/lib/arm/libsmbconf.so
/data/app/com.google.android.sambadocumentsprovider-1/lib/arm/libsmbregistry-samba4.so

Any ideas? Alternative apps which (a) work on 5.0.1 and (b) provide the SMB mount "transparently" as if they were a folder on the device itself?