Inkscape ver 1.0.2 (2021 Release)
Operating System : Windows 10
PC Specification :
- i5 4200U
- GT 720M
- Ram 4GB

So I have this problem, whenever I try to use text transform, It comes an error and the text transform doesn't run properly, it doesn't change anything. Here is the screenshot of what i got when i use the text transform extension :
- Flip Case
- Lowercase
- Random case
- Sentence Case
- Tittle Case
- Uppercase
I have tried uninstalling Inkscape and re-install it with the current and older version (ver1.0.1 Release 2020). But it doesn't change anything.

I also have tried deep installing using Geek Uninstaller to clean register and all inkscape data left, but it still the same after i re-install it.

For Information, several months later before i uninstall the older version ( i dont remember, is it the 1.0.0 or 1.0.1) and installing ver1.0.2 the text transform extension can still be used and it did work.

So, can someone give me a solution ?

A fix has recently been made to 1.0.2. I'd try downloading again and re-install Inkscape.

TYLER.  I'm using 1.02 and it isn't working as well.  Also, getting a similar error with Extensions>Text>Hershey Text.  

1.0.2 Might have gotten some fixes today, I'd try downloading again and re-install Inkscape.

Ubuntu 20.04.2 and Ubuntu 21.04 with Inkscape 1.0.2 (1.0.2+r75+1) and the same error occurs when using any text extension.

/usr/lib/python3/dist-packages/apport/report.py:13: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
  import fnmatch, glob, traceback, errno, sys, atexit, locale, imp, stat
Traceback (most recent call last):
  File "text_flipcase.py", line 13, in <module>
    FlipCase().run()
  File "/usr/share/inkscape/extensions/inkex/base.py", line 140, in run
    self.save_raw(self.effect())
  File "/usr/share/inkscape/extensions/inkex/extensions.py", line 315, in effect
    for elem in nodes.values():
AttributeError: 'odict_values' object has no attribute 'values'