Can't open Pixelmator Pro

Is something not working like it should? Let us know.
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2018-02-09 14:43:20

Application Specific Information:
BUG IN CLIENT OF LIBPLATFORM: Destroying semaphore failed

Model Name: iMac
Model Identifier: iMac11,3
Processor Name: Intel Core i3
Processor Speed: 3.2 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 4 MB
Memory: 8 GB
Processor Interconnect Speed: 5.86 GT/s
Boot ROM Version: IM112.005B.B00
SMC Version (system): 1.59f2
Serial Number (system): W80454HMDB6
Hardware UUID: 5E30E1CB-0392-5048-83D1-B70C7BCBF289

more system information available, but I won't post that in an open forum.
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2018-02-09 15:34:28

You have an Imac 2010/2011. Which means old machine. Pixelmator Pro is only usable on Mac which support Metal 2. Makes futher development quicker... which is in my eyes a good thing... I have an Macbook pro 2016 (it supports it) and my Macbook air 2011 (does not).
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2018-02-09 15:37:18

ok. Affinity Photo runs on it, have been using Pixelmator for several years, but not worth buying a new computer to continue. Will keep using old Pixelmator if needed, thanks!