I have been running it for a while now Bill, it seems that all of the problems people are having with OR/Win10 are Java related so I would just suggest making sure you have the current version and try to download OR again. Wish I could be of more help but that's all I got. Good luck
Tried for the last 2 hrs. and nothing. Windows 10 comes with this Micrsoft Edge browser. Says OR is not compatible with Edge so they say to download Firefox, which I did, and it didn't help. I still cant open it. Guess I'll just have to do without a sim program. Frickin windows needs to quit changing things or Openrocket needs to get with these changes. Its getting ridicules having to download this or that or go into settings and do this or that. One or two mouse clicks.....that's all I want.....but noooooo.
Done ranting now, thanks for everyones "help" or at lease trying.
I think I have identified your confusion. You can have a Java plugin installed in your browsers, but that is not what you want. You need the full Java Runtime Environment for Windows installed as an application. To get that, go here: https://java.com/en/download/
Download and install it on your computer. If it asks you if you want it to uninstall old Java versions, say Yes.
In Windows 10, the Edge browser does not support plug-ins and therefore will not run Java. Switch to a different browser (Firefox or Internet Explorer 11) to run the Java plug-in. Select the More Actions option located at the top right of the Edge browser and click on Open with Internet Explorer. More info
This is the message I get when I tried to verify if I had Java. Like Bat said, OR doesn't open in a browser so installing Firefox or Explorer 11 is useless. There has to be an easy-er way around this bullshit.
Okay, for what it is worth, I work in IT and have found a solution that works for "ME"
Your mileage may vary and please understand that I make NO promises that this will work for anyone else as well.
What worked for me was:
Download a file called "jarfix.exe" from https://johann.loefflmann.net/en/software/jarfix/index.html#Download (as ALWAYS scan the file you download with your favorite AV scanner before running) There are details about the file at this site if you are interested in reading them as well.
Double click/run the file AS AN ADMINISTRATOR
Double click on your "OpenRocket" icon, "Ta Da" (for me anyway)
The above pre-supposes that you have already verified that you have the newest version of JAVA installed as well.
Hope this helps others resolve this issue as well! For those that have posted other answers, Thanks for your help also!
At last, I was just days away from my Rocksim demonstrator expiring and having to pay £90 for the real thing. Then I tried this fix and it worked. I now have OR back and working again.
Thanks very much for this suggestion, it worked for me also.
Have to say that with (limited) experience of Rocksim it is similar to OR with regard to the results and calculations. The main difference I found was in ease of use. OR is definitely easier, more intuitive, and user friendly. And of course, it hasn't cost me £90!
It would be great if the software experts could find a permanent fix for use with Windows 10.
Thanks again,
SO.
Bill, make IE your default browser and try it.
I am not a Java fan, not a Flash fan. I have seen too many problems with each. Probably why I still use Rocksim and Rasaero.
Rocksim for slow and Rasaero for fast. I know those use OR with success but lordy, I found it a heck of a lot harder to run than Rocksim. Granted, I haven't tried in years but had a time just trying to load a motor. I did back to back runs of a flown, simmed rocket meaning I simmed it on Rocksim, flew it and it was pretty close on altitude prediction and then converted the Rocksim file to OR. OR wasn't even near the RS prediction or the flown flight so I gave up. It was several years ago so I have to concede that the situation may have improved in the intervening years. If one doesn't want to spend the money, OR is the only choice for free semi-easy sim software. If one starts from scratch, it's more of an incentive to learn. Kurt
Rocksim for slow and Rasaero for fast. I know those use OR with success but lordy, I found it a heck of a lot harder to run than Rocksim. Granted, I haven't tried in years but had a time just trying to load a motor. I did back to back runs of a flown, simmed rocket meaning I simmed it on Rocksim, flew it and it was pretty close on altitude prediction and then converted the Rocksim file to OR. OR wasn't even near the RS prediction or the flown flight so I gave up. It was several years ago so I have to concede that the situation may have improved in the intervening years. If one doesn't want to spend the money, OR is the only choice for free semi-easy sim software. If one starts from scratch, it's more of an incentive to learn. Kurt
+1. I couldn't ever really get comfortable with OR results. Yeah you can draw nicer pictures with it, but that's like last on my feature list for simulation software.
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