Error: Cannot run License Manager

User 8c57fe7217

15-06-2015 18:42:02

To whom it may concern:

I tried to install JChem for Office 15.6.800 32 bit.

I am running MS Office 2013 Pro Plus 32 bit in MS Windows 8.1 64 bit. I have JRE 1.8_45 32 bit installed.

When I tried to install my ChemAxon license, I got the following error:

"Cannot run license manager. Reason: Unable to cast object of type 'sun.awt.image.ToolkitImage' to type 'java.awt.image.BufferedImage'."

Thank you for your help with this.

-- Rudy


There were additional details with the error:

Exception: System.InvalidCastException
Message: Unable to cast object of type 'sun.awt.image.ToolkitImage' to type 'java.awt.image.BufferedImage'.
StackTrace:    at System.Windows.Forms.Control.MarshaledInvoke(Control caller, Delegate method, Object[] args, Boolean synchronous)
   at System.Windows.Forms.Control.Invoke(Delegate method, Object[] args)
   at System.Windows.Forms.Control.Invoke(Delegate method)
   at ikvm.awt.NetToolkit.Invoke[TResult](Func`1 del)
   at ikvm.awt.NetToolkit.createFrame(Frame target)
   at java.awt.Frame.addNotify()
   at java.awt.Window.pack()
   at chemaxon.license.LicenseManagerGUI.createFrame(String arg)
   at chemaxon.license.LicenseManagerGUI.createFrame()
   at ChemAxon.NET.Windows.Forms.Licensing.MarvinLicenseManagerView.†††
   at ChemAxon.NET.Windows.Forms.Licensing.MarvinLicenseManagerView..ctor()
   at ChemAxon.JChemForOffice.JChemAddinBase.Licenses(IntPtr owner)

Thanks again.







ChemAxon 2e7d8629fa

18-06-2015 13:21:11


 Dear Rudy,

The fix is
available in latest release (15.6.1500), which can be downloaded
from here:


JChem for
Excel installers:


JChem for
Office installers:




User 8c57fe7217

18-06-2015 14:19:15

Thanks! I installed the newest version of JChem for Office, and now I am able to install the license. Everything appears to be working just fine.

I really appreciate the competence, professionalism, and responsiveness of ChemAxon, and their generosity in making such excellent software available for free to academic teachers and researchers.