Fixed it, Thanks Ronni 

Sent from Sev's iPhone

> On 13 Mar 2018, at 14:55, Ronni Brown <ro...@mac.com> wrote:
> 
> 
>> On 13 Mar 2018, at 2:13 pm, Severin Crisp <sevcr...@westnet.com.au> wrote:
>> 
>> Together with some minor hiccups I notice that several apps are in the dock 
>> with generic icons.   How do I fix this?   
>> In times gone by there was a disk utility to attend to this but not in these 
>> modern times.  
>> iMac with 1.5T fusion drive, High Sierra.   
>> Severin Crisp
>> -
> 
> Hi Severin,
> 
>  It seems to be a caching issue.
> Try booting in Safe Mode. 
> <https://support.apple.com/en-us/HT201262>
> 
> Cheers,
> Ronni
> 
> 13-inch MacBook Air (April 2014)
> 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz
> 8GB 1600MHz LPDDR3 SDRAM
> 512GB PCIe-based Flash Storage
> 
> macOS High Sierra 10.13.3
> 
> 
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