It used to work? OpenRocket won't open...?

[McKailas Dad]

I have a shortcut on my desktop for OR. When I try to open it, I get a error that says it "... is not a valid Win32 application."

I have the latest version of Java, and OR. Its on a Gateway Laptop.

Everything else seems to be fine, but I can't open any of the versions of OpenRocket...

What did I do? Did I mess with the wrong things on my computer again?

Thanks,

:blush::eyeroll:

 

[jms]

Hey there, do you have Java installed?

https://www.java.com/en/download/testjava.jsp

This page will tell you whether Java is installed on your system correctly.

 

[GDJ]

I have a shortcut on my desktop for OR. When I try to open it, I get a error that says it "... is not a valid Win32 application."

I have the latest version of Java, and OR. Its on a Gateway Laptop.

Everything else seems to be fine, but I can't open any of the versions of OpenRocket...

What did I do? Did I mess with the wrong things on my computer again?

Thanks,

:blush::eyeroll:

Have you tried opening up the application without the shortcut?

 

[brianc]

What does the shortcut properties (right-click) say for the target?

Are you Win95 or 7?

Mine (Win7) says - "C:\Program Files\OpenRocket\OpenRocket-12.03.jar"

 

[McKailas Dad]

JMS, yes, l have had Java check for the latest version.

GJD, I also get the same error when I try to open it right from the folder.

BrianC, I actually have Vista. 4gig 64bit.

This is what I get " C:\Users\Jeffrey\Downloads\OpenRocket-12.03.jar "

Like the title says, "it used to work..."

Please bear with me, I am not very computer literate.

 

[GDJ]

I would try a fresh download and install of Java. If all the Openrocket files are DOA, then I suspect a Java error.

 

[McKailas Dad]

Ok, wierd. If I right click the shortcut, and click 'open with...", I open with Java and it works.

I've never had to do that before.

c: :confused2:

 

[Salvage-1]

Looks like OpenRocket was still 'bound' to another (older) version of Java and was looking for that.

If this happened immediately after updating to a newer version of Java, that would explain it. Do that right click, open with, and then check the box that says always use this program. Should fix it.

 

[davel]

Sounds like you lost the file association. Try S-1's suggestion first. If not, then dig a little deeper. Open the file association dialog as shown here: https://ask-leo.com/where_did_file_associations_go_in_windows_vista.html

Scroll down to the listing for .jar and highlight it. Then click on the "Change Program" button. 'Browse' to C:\Program Files (x86)\Java\jre6\bin and select the file "javaw.exe".

 

[McKailas Dad]

Salvage-1, that was it! (and I was that close)

I chose the "always open with..." Java, now it works from the shortcut.

I wonder what I did to mess it up?

Oh well, works now!

Thanks everybody.

 

[Salvage-1]

YOU didnt mess anything up.. Windows is capable of doing that all by itself.