Thanks for your reply, David. 

I reverted to 9.1.0 for the time being and it's working. I am intending to 
finish some coding assignments after which I intend to try and update to 
the latest version of deal.ii. This time, I will try to compile it from 
source code and will reach out again, if I run into problems. 

Regards 
Deepak

On Friday, 26 June 2020 00:16:52 UTC+8, David Wells wrote:
>
> Hi Deepak,
>
> I think that we have now fixed our Mac packages, so at the moment I think 
> the best answer would be to download the new version of the mac bundle for 
> deal.II from our GitHub release page. I had exactly the same error as you 
> did with the older version of the mac bundle and the new version fixed it 
> for me, so I am optimistic that it will work for you too.
>
> > I don't understand the Mac OS or Linux environment too well, so please 
> excuse me for asking - but when you say "compile yourself"  - what do you 
> mean? and is there a documented "procedure" for compiling that I can follow?
>
> This is a completely reasonable question :) I meant that you should 
> download the source code, configure your local copy for your machine, 
> compile it, and install it. We have detailed instructions on how to do this 
> on the web site:
>
> https://www.dealii.org/current/readme.html
>
> Do you see what to do? Please post again if you still have questions.
>
> Best,
> David
>
> On Wed, Jun 24, 2020 at 1:19 AM Deepak Kukrety <deepak...@gmail.com 
> <javascript:>> wrote:
>
>> Hi David, 
>>
>> Thanks for confirming this. On a related note, may I ask which earlier 
>> version could be a safe bet to install? 
>>
>> I don't understand the Mac OS or Linux environment too well, so please 
>> excuse me for asking - but when you say "compile yourself"  - what do you 
>> mean? and is there a documented "procedure" for compiling that I can 
>> follow? 
>>
>> Regards 
>> Deepak
>>
>>
>>
>>
>> On Tuesday, 23 June 2020 23:30:53 UTC+8, David Wells wrote:
>>>
>>> Hi Deepak,
>>>
>>> This is a known issue with the current version of the mac bundle - it 
>>> doesn't work with Catalina. We are in the process of fixing this. For now, 
>>> unfortunately, you will have to either use an older version of deal.II or 
>>> compile it yourself.
>>>
>>> Sorry,
>>> David
>>>
>>> On Mon, Jun 22, 2020 at 7:05 PM Deepak Kukrety <deepak...@gmail.com> 
>>> wrote:
>>>
>>>> Dear All, 
>>>>
>>>> I recently updated deal ii, but I am unable to run the programs. The 
>>>> main problem appears as a set of warnings when starting to "make": 
>>>>
>>>> ld: warning: directory not found for option 
>>>> '-L/Applications/deal.II.app/Contents/Resources/spack/opt/spack/darwin-catalina-x86_64/clang-11.0.3-apple/zlib-1.2.11-rqiqrujgg5aemhk7eqjk3asbaukff'
>>>>
>>>> ld: warning: directory not found for option 
>>>> '-L/Applications/deal.II.app/Contents/Resources/spack/opt/spack/darwin-catalina-x86_64/clang-11.0.3-apple/dealii-develop-rrf4rjxvntgbw2l44kbr6aoa4xnr4gsb/lib'
>>>>
>>>> I tried to make run, despite these warnings and get the following 
>>>> errors: 
>>>>
>>>>
>>>> bash-3.2$ make run 
>>>>
>>>> [ 66%] Built target step-1
>>>>
>>>> *Scanning dependencies of target run*
>>>>
>>>> [100%] *Run step-1 with Debug configuration*
>>>>
>>>> dyld: malformed mach-o: load commands size (33848) > 32768
>>>>
>>>> make[3]: *** [CMakeFiles/run] Abort trap: 6
>>>>
>>>> make[2]: *** [CMakeFiles/run.dir/all] Error 2
>>>>
>>>> make[1]: *** [CMakeFiles/run.dir/rule] Error 2
>>>>
>>>> make: *** [run] Error 2
>>>>
>>>>
>>>>
>>>> I have tried re-installing, going back to an older version of make, but 
>>>> I seem stuck with this problem. 
>>>>
>>>>
>>>> Any help will be highly appreciated. 
>>>>
>>>>
>>>> Regards 
>>>>
>>>> Deepak
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> -- 
>>>> The deal.II project is located at http://www.dealii.org/
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>>>>  
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>>>> .
>>>>
>>> -- 
>> The deal.II project is located at http://www.dealii.org/
>> For mailing list/forum options, see 
>> https://groups.google.com/d/forum/dealii?hl=en
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>> .
>>
>

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