[Users] Error about a shared object file

[Hiro.Kig]

Dear all

I am Hiromitsu Kigure.
This is the first time I send
an e-mail to this mailing list.
I am sending you this email to seek your advice.

I use Einstein Toolkit in the
following situation.

・OS:Fedora23
・Executable:etilgrmhd (IllinoisGRMHD)

The compile was done and
executable file was made.
However the following error
message was displayed
when execute the file.

"error while loading shared libraries: libgsl.so.19: cannot open shared
object file: No such file or directory"

There was no problem few weeks ago.
So I don't have any idea why
the error occured.

What should I do?
・Update the OS?
・Update the IllinoisGRMHD?
(I don't use the latest version)

I would appreciate it if you would give me some advice.

Thank you,
Best regards.
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