title: Tizen watch app shows signing error when trying to install on Galaxy Watch
body: <p>I am developing a web-based app on Tizen Studio 3.7 and I wish to install it on a Samsung Galaxy Watch. I am able to connect the watch to my PC via wifi, however, when I try to run the app I face the following error:
  &quot;
  The application installation on the device has failed due to a signature error! (error code: -12)</p>
  <p>You need an appropriate certificate profile, which can be created or activated in the Certificate Manager. Do you want to open the Certificate Manager?
  &quot;</p>
  <p>I have run the same app a couple of months ago, and also I am currently using the same certificate profile as it was used earlier.
  Also, the app runs fine on the emulator.</p>
  <p>There are two more concerns related to my IDE, although not big, but those might be a associated with this issue.
  -&gt; the Certificate Manager never starts when I click on the button in Tizen Studio. I need to start it using eclipse.exe which is in \tools\certificate-manager .
  -&gt; also, the IDE never starts when I click on TizenStudio.exe, I need to start it using eclipse.exe which is in the same folder as TizenStudio.exe</p>
  <p>I have tried creating new certificate profiles and building the app, yet the same error repeats.</p>