..\..\CDs\Artist\Album\track 01.flac

H:\Music
    + [_Other things]
        + [_Playlists]
            - Playlist A.m3u8
            - Other playlist files...
    + [CDs]
        + [Artist]
        + ...

.\CDs\Artist\Album\track 01.flac'

H:\Music
    + [CDs]
        + [Artist]
        + ...
    - Playlist A.m3u8
    - Other playlist files...

Hello again Regor,
following a hint here I tried with the release version of the script (v 0.4.1), and it works without crashing.
But I still can't find an option to apply actions to a specific tag (nor I can find the "autotag" option): could it be because the release version (which, in fact, dates to 15 jun) hasn't got all the features that the repository version has? Or am I just missing something?

(I suppose I should see something like in this GIF you uploaded: https://hydrogenaud.io/index.php?action=dlattach;attach=20604;image but right above "font size" in the menu I see only "Show usage info on tooltips")

### Added
- Categories: double clicking on the header cycles through the categories shown one by one.
- Added tag filtering menu to only show playlists which contain selected tags. Tag filtering is always reset on startup, no matter what 'Save filtering between sessions' is set to. Use categories for 'virtual folders' or permanent playlist categorization, tags are meant only for informative purpose or auto-tag actions (thus not needing permanent filtering).
- Popup warnings when finding dead items sending selection to playlist (Shift + L. Click), creating a new playlist from active playlist, manually saving a playlist or auto-saving (configurable). Note checking on auto-saving is disabled by default since it may affect performance and also result on popups being thrown multiple times until dead items are fixed.
### Changed
- Relative Paths: Improved relative path support. Playlist folder may now be at a different level than the library folders as long as they share the same root For ex. 'H:\_Playlists' and 'H:\Music\Cds'.
- Cache: Paths from current library items are cached at script loading, it's done async and in iterative steps so it doesn't freeze the UI. It was done previously once, per panel, when loading the first playlist. The change should greatly speed up the loading of the first playlist since most of the work is already done at that step, thus being as fast as consecutive playlist loading before.
- Categories: Current category view is now saved only when 'Save filtering between sessions' is enabled, otherwise it will be reset to show 'All' on startup.
- UI: Tooltip shortcuts are updated as soon as the key modifiers are pressed, even if the the mouse has not been moved (tooltip is redrawn). That should make easier to see the action which would be applied without needing to move the mouse constantly to update the tooltip.
- UI: Header tooltip (with current filter view) is updated after double clicking, even if the the mouse has not been moved  (tooltip is redrawn). That should make easier to see the current category applied while cycling without needing to move the mouse constantly to update the tooltip.
- Added descriptions at top of most menus.
- Minor code cleanup.
### Fixed
- UI: When a playlist of current view had no category, next category letter was not being shown on the letter separators. i.e. Jumping from none (-) to B, skipping A, when there were playlists with categories starting with A, B and some without categories. Long time UI only bug since first releases. Only happened for the category sorting view; when sorting by name, playlist always have a name by design, so first item header was never 'empty' and thus the next one was always shown fine.

### Changed
-UI: current selection rectangle now has its width adjusted according to 'Show name/category separators', so it doesn't overlap with the letters at the right when enabled.
-UI: when opening the contextual menu for a playlist (L. Click) the selection rectangle will be shown until the menu close. Previously it was cleared as soon as the menu was created or the mouse left the panel. Opening menus for things not directly related to an specific playlist will maintain the previous behavior.
-UI: entire panel is repaint when moving the mouse over it instead of currently selected playlist only to ensure selection is always properly drawn even with extreme movements.
### Fixed
-Menus: crash when selected playlist index was out of bounds on L. Click menu creation due to menu being created 100 ms later than clicking. If the mouse was moved really fast out of the list within that 100 ms delay, the selected playlist was considered null (crash). It would also change the playlist to which the menu applied if the mouse was moved to another playlist really fast (bug). Fixed both cases now, forcing the playlist index at the exact moment the L. Click was done (on button up).

    ### Fixed
   -Importing Json: skips playlists at importing whenever they don't have a query or are not Autoplaylists. Feature was added at a time where the only playlists items on json where autoplaylists (so importing from marc2003's panel worked fine), now that .fpl playlists also have a virtual counterpart, additional checks must be done. Should also serve as sanity check for manually created autoplaylist json files.
   - Menus: send selection to playlist entry has now appropriate flags to be disabled when there is no selection, it's an autoplaylists, the playlist is locked or it's an .fpl playlist.
   - Menus: using the menus to rename .pls playlist was failing due to a back coded check even if the playlist was properly renamed.
   - Tooltip: when trying to send selection to a playlist and there is no selection, it's an Autoplaylist, the playlist is locked or it's an .fpl playlist, a warning is shown to note it's not possible to do so.
   - Shortcut: send selection (Shift + L. Click) is disabled when it's an Autoplaylist, the playlist is locked or it's an .fpl playlist; instead of simply failing.
   - UI: bug with uppercase playlist names not being correctly identified when mixed along lowercase names (spanning of the same separator multiple times)

   ### Added
   - AutoPlaylists: new option on contextual menu to clone the selected AutoPlaylist as a standard playlist. i.e. automatizes the process of loading it, copying the track, pasting them into a new playlist and creating a new playlist file from it.
   - AutoPlaylists: new filtering option on header menu for AutoPlaylists on cloning process to remove duplicates according to some tag(s) or TF expression(s). By default is set to 'artist,date,title'. Automatizes the process of removing duplicates by tags after cloning using tools like those found on Playlist-Tools-SMP and automatically fixes one of their worst quirks (having multiple versions of the same tracks).
   ### Changed
   - UI: Auto-Playlists size now gets updated when loading them (since it's essentially performance free).
   - Menus: Reordered menu entries into sub-menus for more logical access: panel behavior, playlist behavior, UI, ...
   ### Fixed
   - Menus: Force relative paths menu entry is now disabled when playlist is locked.
   - Bug on first playlist not being properly updated at some points (at least on manual update) due to a bad coded check for index !== 0.
   - Crash when deleting an AutoPlaylist right after loading it if Track Tagging was enabled due to callback delays.
   - Playlist with special characters did not properly update the playlist path at some instances (the chars were not being stripped until manual refresh).

### Added
- UI: new option to enable/disable header on selected playlist contextual menu. The header shows the playlist format and name.
- AutoPlaylists: new option on contextual menu to export selected AutoPlaylist as json file (ready to be imported by other instances of the manager). Not backwards compatible with marc2003's panel.
- AutoPlaylists: new option on list menu to export all AutoPlaylist (and optionally .fpl virtual files too) as json file at once (ready to be imported by other instances of the manager). Not backwards compatible with marc2003's panel
### Changed
- UI: contextual menu for selected playlist can now be invoked on the entire selection rectangle (not only over the name).
- Menus: 'Copy playlist file to...' is now available for .fpl playlist too, since it's the only option which doesn't involve playlist editing.
- Menus: 'Bind active playlist to this file...' is now disabled for locked playlists (must unlock them first) and .fpl playlists (in any case).

    ### Added
- Menus: new option on header menu to set intervals for auto-loading and auto-saving files (previously done only via properties).
    ### Fixed
- Fixed crash when trying to load a playlist with non present items and 'omit not found' was enabled (for ex. exporting features).

### Changed
- Workaround for SMP limits on automatic code-page detection for text files (playlists). If code-page is present in M3U files (#EXTENC:...), encoding is forced instead of using the detected code-page (which may be wrong). .m3u8 files are always considered as UTF-8 files. This should cover most UTF-8 problems (when BOM is not present) on M3U files. .pls format still relies on code-page detection.
- AutoPlaylists: Autoplaylists size now gets updated asynchronously (if feature is enabled), thus not impacting loading time at startup.
- UI: selection rectangle drawing is skipped if color matches the background color.

### Changed
- Playlists consistency tools: all are now executed asynchronously: Absolute/relative paths..., external items, dead items, duplicated items and playlist size mismatch.
- AutoPlaylists: Autoplaylists automatic track tagging now is done asynchronously (if feature is enabled), thus having a minimum impact on loading time at startup.

No, for me it doesn't work, I tried with 3 pdf readers , but no luck. Maybe you should put the gifs separately, in a folder? (for those that can't see them in a pdf).

### CHANGED
- All json files are now saved as UTF-8 without BOM. All json files are now read as UTF-8 (forced).
- Updated installation instructions.

   ### Added
   - UI: Header icon can now be customized according to category being shown with an extra json config file. Check readme for instructions ('Advanced tips').
   ### Changed
   - Requisites: Script requires at minimum SMP 1.5.2. now.
   - UI: Minor UI adjustments to the header.
   - Export and copy tracks to: new configuration to asynchronously copy files, not blocking the UI. This is now the default behavior.
   ### Removed
   - UI: Removed wingdings dependencies. Replaced with Font Awesome (already being in use at other places).

Error: Spider Monkey Panel v1.6.1-dev+757cb073 (Playlist Manager: Playlist Manager v0.2 by XXX)
this.properties.bBOM is undefined

File: playlist_manager_list.js
Line: 1831, Column: 2
Stack trace:
  _list@playlist_manager_list.js:1831:2
  @:79:12