Ok, will give you some hints but wondering why you not use OSMC as a print & file server (samba is in the App Store).
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you could try fstab based mounts see Configuring fstab based Samba share mounts
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Check with
smbclient -L 192.xxx.xx.xxx
how the share looks like you first need to install smbclient viasudo apt-get install smbclient
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Enable debug logging and upload logs after trying to access it via smb:/192.xxx.xx.xxx/media