some plug-ins, modules are not deleted after uninstall

[alain.roger]

Hi,

i installed few weeks ago some version of VM1.9.8 firstly and lately 2.0.3/2.0.4.
after each uninstall i discovered that some plug-ins and modules are still in DB written but for a particular reason they are not removed correctly.

for example for the plug-ins, all 3 generate this error : Plugin Uninstall: Manifest file invalid or not found.
we are talking about plug-ins :

• VMPayment - Standard
• VMShipper - By weight, ZIP and countries
• VMSHIPPER_WEIGHT_COUNTRIES

the module having such issue is:

• mod_virtuemart_manufacturers

and error message is/are:
JFolder: :files: Path is not a folder. Path: D:\webserver\www\rogtek25\modules\mod_virtuemart_manufacturers
JInstaller: :Install: Cannot find XML setup file
JFolder: :files: Path is not a folder. Path: D:\webserver\www\rogtek25\modules\mod_virtuemart_manufacturers
JInstaller: :Install: Cannot find XML setup file
JFolder: :files: Path is not a folder. Path: D:\webserver\www\rogtek25\modules\mod_virtuemart_manufacturers
JInstaller: :Install: Cannot find XML setup file
JFolder: :delete: Path is not a folder. Path: D:\webserver\www\rogtek25\modules\mod_virtuemart_manufacturers
Module Uninstall: Manifest file invalid or not found.

how is it possible that manifest XML is missing when i didn't remove anything manually ?
how can i remove those plug-ins/module correctly now ?

thx.

[alain.roger]

no idea ?