As I stated in the title about 50% of the WUs terminate with no particular message, but with a completion time of few minutes (2-4 minutes) and the server put them in Validate error state

I think 50% is really too much. May be it's time to suspend new WUs creation, debug the problem and then restart the process, isn't it ???

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As I stated in the title about 50% of the WUs terminate with no particular message, but with a completion time of few minutes (2-4 minutes) and the server put them in Validate error state

I've the same problem (error is present in user's profile).
From home page
Successes last 24h: 20,981
Failures last 24h: 5,630

25% is, anyway, high!!!

I don't see any problems on Linux x64

https://ralph.bakerlab.org/results.php?hostid=35093

!00% success rate (completed and validated) so far on my Mac. One of mine (there may be more, haven't time to trawl through the whole list) was a resend which had ended quickly (68.02 cpu sec) on a Windows machine and received a validate error. The sderr out included this bit:

ERROR: Can't create a polymer bond after residue 4 due to incompatible type: LYS:CtermProteinFull
ERROR:: Exit from: ......srccoreconformationConformation.cc line: 845
DummyMover::apply() should never have been called! (JobDistributor/Parser should have replaced DummyMover.)

ERROR: false
ERROR:: Exit from: ......srcappspublicboincminirosetta.cc line: 96
DummyMover::apply() should never have been called! (JobDistributor/Parser should have replaced DummyMover.)

repeat, repeat, repeat...before ending with:

DONE :: 99 starting structures 1201 cpu seconds
This process generated 99 decoys from 99 attempts

It ran 5248 cpu seconds on my machine successfully generating two decoys from two attempts. Click the link above ("one of mine") to see the details.

as of your replies, it seems that, only on my Windows 10, there is such a problem

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as of your replies, it seems that, only on my Windows 10, there is such a problem

Same here. 3 machines with Windows 10 (2 64 bit and 1 32 bit)

From home page
Successes last 24h: 20,981
Failures last 24h: 5,630

Successes last 24h: 18,786
Failures last 24h: 5,467

Failure rate is increasing :-(

Failure rate is increasing :-(

With new version, failure rate is decreasing!! :-)