"Exec format error" in HelloWorld-Linux example

In 13.1 version of SoC EDS this example works normal 2 month ago, and now in 14.0 fails.

I make all described in "Getting Started with Linux Application Debugging" from ug_soc_eds.pdf, and on final stage see dialog "Connection failed" with text:

--- Quote Start ---

Unable to connect to LinuxAppDebug_DevKit

Reason: Failed target configuration:

gdbserver exited unexpectedly see the App Console for further information

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In App Console:

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Preparing the debug session

# cd /home/root

# export LD_LIBRARY_PATH=".:/home/root:$LD_LIBRARY_PATH"

# gdbserver :5000 "/home/root/hello.o"

Process /home/root/hello.o created; pid = 279

Cannot exec /home/root/hello.o: Exec format error.

Child exited with status 127

No program to debug. GDBserver exiting.

#

--- Quote End ---

I think that my SD-card have old Linux-version for new compilers in SoC EDS, fill it with new 14.0-image through Win32DiskImager.exe -- error remain.

Delete all project and reimport it from archive, recompile -- similarly.

I see a file hello.o in /home/root (Remote System Explorer view), copy it back to Windows filesystem -- it is equal with my in project, 2792 bytes. Delete it, run configuration again -- it appears in /home/root: Eth-link is working !

Where may be problem ? In 13.1 this example was debugged normal.