Hi, I had the same issue. I used a trick. I readded the folder from raspberry (the indexing is faster), then I change the share on others folders (share read/write). You have 30 days to change the permissions with free version on others devices and raspberry (for example I use read only on raspberry). But, exist a solution for this issue?
I have the same problem: [20150529 17:11:11.724] TF[FB7B] [0xaf2f08d0]: Error: myfile - PostDownload: Permission denied (13) and TF[FB7B] [0xaef20388]: unloading torrent by timeout in LAN on (Raspberry PI): Architecture: armv6l Byte Order: Little Endian CPU(s): 1 On-line CPU(s) list: 0 Thread(s) per core: 1 Core(s) per socket: 1 Socket(s): 1 and bittorent sync 2.0.120. This folder was sync with my laptop, then I had to change key and, with the same file, now I have these errors. Raspberry folder is only read folder.