there is nothing in the preview part

[A-Little-Nut]

Thanks a lot for your works. I met some problems.

Traceback (most recent call last):
  File "C:\Users\蒋磊\AppData\Roaming\Sublime Text 3\Installed Packages\MarkdownLivePreview.sublime-package\MarkdownLivePreview.py", line 218, in _update_preview
  File "./python3.3/ntpath.py", line 256, in dirname
  File "./python3.3/ntpath.py", line 220, in split
  File "./python3.3/ntpath.py", line 162, in splitdrive
TypeError: object of type 'NoneType' has no len()

How should I do?

[lorddoumer]

same issue
Traceback (most recent call last): File "C:\Program Files\Sublime Text 3\sublime_plugin.py", line 525, in on_load_async callback.on_load_async(v) File "C:\xxx\Sublime Text 3\Installed Packages\MarkdownLivePreview.sublime-package\MarkdownLivePreview.py", line 146, in on_load_async self._update_preview(markdown_view) File "C:xxx\Sublime Text 3\Installed Packages\MarkdownLivePreview.sublime-package\MarkdownLivePreview.py", line 204, in _update_preview if time.time() - self.last_update < DELAY / 1000: TypeError: unsupported operand type(s) for /: 'NoneType' and 'int'

[chirul0]

Same problem on Mac OS:

Traceback (most recent call last):
  File "/Applications/Sublime Text.app/Contents/MacOS/sublime_plugin.py", line 525, in on_load_async
    callback.on_load_async(v)
  File "/Users/narene/Library/Application Support/Sublime Text 3/Installed Packages/MarkdownLivePreview.sublime-package/MarkdownLivePreview.py", line 146, in on_load_async
    self._update_preview(markdown_view)
  File "/Users/narene/Library/Application Support/Sublime Text 3/Installed Packages/MarkdownLivePreview.sublime-package/MarkdownLivePreview.py", line 204, in _update_preview
    if time.time() - self.last_update < DELAY / 1000:
TypeError: unsupported operand type(s) for /: 'NoneType' and 'int'

[kg4zow]

Same problem, Sublime 3.2.2(3211) on macOS 10.15.4. I'm not seeing any error messages or stack traces. It does open a new two-pane window, but the pane on the right looks like a normal text editor - in fact it allows me to type and shows line numbers as I enter text there.

[mattpopovich]

Same issue. Sublime 3.2.2(3211) on macOS 10.15.5.

[jmbeuken]

+1

[gquittet]

Same here on macOS 10.15.6

Traceback (most recent call last):
  File "/Users/gquittet/Library/Application Support/Sublime Text 3/Installed Packages/MarkdownLivePreview.sublime-package/MarkdownLivePreview.py", line 218, in _update_preview
  File "./python3.3/posixpath.py", line 151, in dirname
AttributeError: 'NoneType' object has no attribute 'rfind'
Unable to parse command: drag_select {"additive": true, "event": {"button": 1, "x": nan.0, "y": nan.0}}

[CalamitousCode]

I have the exact same error:

Traceback (most recent call last):
  File "C:\Users\MyName\AppData\Roaming\Sublime Text 3\Installed Packages\MarkdownLivePreview.sublime-package\MarkdownLivePreview.py", line 218, in _update_preview
  File "./python3.3/ntpath.py", line 256, in dirname
  File "./python3.3/ntpath.py", line 220, in split
  File "./python3.3/ntpath.py", line 162, in splitdrive
TypeError: object of type 'NoneType' has no len()

ST3 v3.2.2 Build 3211
Windows 10 Pro 2004

After looking at the code and testing with a named file instead of a new untitled file, I believe the issue could be when the code is checking the name/path of a file that doesn't exist:

basepath = os.path.dirname(markdown_view.file_name())
Here's a link to the line in the repo.

[hophopkhangaroo]

Same problem, Sublime 3.2.2(3211) on macOS 10.15.4. I'm not seeing any error messages or stack traces. It does open a new two-pane window, but the pane on the right looks like a normal text editor - in fact it allows me to type and shows line numbers as I enter text there.

I was experiencing the same issue. I found that the live preview doesn't render if you try to include an image in your document. Once I removed all references to images, I was able to see the live preview

[dportalesr]

I solved this by simply restarting sublime text.

[arkssheo]

Seems to happen when trying to preview an unsaved file, just closed off the preview tab and reopened and it's working now. Restarting Sublime should also work, of course.