Update 3.4.6 is compatible with WordPress 4.5 and includes the following changes:

• Added document indexing hook for extensions
• Fixed error when editing categories
• Fixed date display in backend file list
• Fixed bug with small thumbnails
• Fixed encoding issue for keywords
• Fixed Cloud Sync browser for WebDav
• Fixed download count when behind a proxy (e.g. Cloudflare)
• Fixed broken thumbnails handling during rescan