Plugin loads on my computer, but no ones else's



I am experiencing sort of an odd problem.  I just finished writing a plugin, and sent it to some freinds to test it out.  I am able to load the plug in in multiple DAWs (Cubase 8 32 bit, and 64 bit (w bridge), on PC, Ableton Live 9 32 bit on PC, and MAC, FL Studio 32 bit, and 64 bit on PC), however no one else that I sent the plugin to has been able to open it.  I shared it with them via a dropbox link.  

So far people have tried to open it in Ableton 9 32 bit on MAC with no luck, and Cubase 7 on PC with no luck.

Does anyone have any idea sa to what could cause this???


Thanks in advance, 



Well the first thing I’ll mention is that you must have a JUCE license to do that – otherwise you have to post the source code and make your plugin open source.

The main reason they probably can’t load the plugin is because they’re running 64 bit hosts which are looking for a 64 bit plugin. You’ve indicated you built it as a 32 bit version.



First, let me say that I have no intention of using this plugin for commercial use.  I was unaware that I needed to purchase a license to merely share a plugin with a freind.

second, I plan on posting the source once I know it is working.

And, no, they are not running 64 bit hosts.  They are running 32 bit hosts.

Is it possible that its something in my build settings?  Its very odd to me that I am able to load it into so many different hosts, yet no one else can..

UPDATE: One friend was able to load it into VSTHost, but thats it..



So you shared your plug-in by just giving the dll, right? The problem is probably missing libraries on your friend's computers...

You can use a tool like this to check your plug-in's dependencies on your friend's computer and see the expected libraries that are not present :




Awesome! This looks really helpful!! Thank you!!  And yes, I did share a dll file with him.

 Im experiencing the same thing with AU (.component), and .vst (however, same as before, I am still able to load them on my own computer no problem).. however, it appears there are similar tools for OS X as well.. 


Thanks,  :)




Hi Gratbodkin, 

You need to make sure you are building in Release mode as well. For Windows also make sure that you are statically linking the runtime (see for example ). 



Would that be accomplished by setting the runtime library setting in the Introjucer for my Visual Studio build to "Use Static Runtime"?


I have one friend that was able to load the plugin in Reaper on his Windows machine, but am still having issues with people being able to load it on MAC machines.

I am able to load it just fine on my own MAC (both the AU, and the VST), however, no one else can even get it to show up in their host programs on MAC....weird..

I have been compiling in release mode with the OSX archetecture setting at Universal Binary (32/64-bit).

Any advice for compiling in XCode?




Well, I would say if your friend(s) is e.g. a member of your band or if you and your friends have formed a partnership for, let's say, "Developing and testing outstanding plug-ins" it would count as internal usage and hence not violate the GNU license.


For Mac I would probably check OSX Compatability Version in Introducer. If that is set to a higher OSX version that your friends are running then my guess is that they won't work. I think the default setting will use the value from the OSX Base SDK Version which by default will depend on what version of Xcode you are running and what the latest OSX SDK contained in that version is.

Failing that auval is a very useful tool on mac you could get your friends to run auval, try:

auval -32 -a

This should list all available 32bit AudioUnits.

Get them to copy the output of the result of that command to see if your plugin is listed.

For some hosts, I think of the top of my head Ableton and Studio One, I remember finding that they build the list of avaliable plugins from the output of those that are 64bit regardless of which architecture you are running!. I suspect this is not the problem but auval is a handy tool on mac.