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Hello Zero, It’s not clear from the photo what linux OS and version you are running, but on CentOS to get the libpng12 system library, you will need root or sudo privileges to install the packages, $ sudu yum install libpng12.x86_64 libpng12-devel.x86_64 If you are on Ubuntu then depending upon what version you are running, you may need to download the libpng package as I think it may longer be directly available via the install tools on Ubuntu 18. You can check the freeview binary, freeview.bin, to see what libraries it uses are not being found.  So if the following command works to find freeview.bin,$ which freeview.bin - then you can do$ ldd `which freeview.bin` - and it will probably tell you that libpng12.so is not found - along with any other libraries it cannot find.   Some package installs will probably need to be done depending upon what is missing, but it would help to know your linux OS and version. - R.

On Aug 2, 2019, at 21:06, 曾 冉 <> wrote:        External Email - Use Caution        Dear everyoneI have a problem about freeview.After runned sample-001.mgz,I will see freeview via code from official website of freesurfer,but it has a error that don't open the file about libpng12.so.0.I had take photos and uploading as attachment.Can you help me resolve this issue?any help would be much appreciated.Kind regards,Zero<0BA6AC6859524FEFAA1490278261578B.jpg><A48C0D6BA65D42C2BA379369FEA7B123.jpg> 发送自 Windows 10 版邮件应用 _______________________________________________Freesurfer mailing listFreesurfer@nmr.mgh.harvard.eduhttps://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer