Problem with reinstalling Arduino IDE

Hi I previously posted multiply times. I am new to this forum and programming with Arduino so I apologise if I offended anyone.

I am trying to get my md25 to connect with Arduino Uno. I was using the IC2 demo sketch provided by Robot Electronics I downloaded another library for a lcd screen and as a result the sketch would not upload.

Following the advice given on this forum i deleted the library folder, the appdata Arduino 15 and in fact the whole Arduino folder. Then I uninstalled and tried to reinstall the Arduino IDE it keeps saying Arduino quit unexpectedly. I tried even downloading the hourly builds but does not work.

Can someone please help me im using Mac Os Seirra version 10.12.6

kind regards,

newtoprog2020

Do you get a crash report when this happens? If so, please post it.

If the length of the crash report exceeds the forum's 9000 character limit, save it to a .txt file and post it as an attachment. If you click the "Reply" button here, you will see an "Attachments and other settings" link that will allow you to make the attachment.

Process: Arduino [3981]
Path: /Volumes/VOLUME/Arduino.app/Contents/MacOS/Arduino
Identifier: cc.arduino.Arduino
Version: ???
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Arduino [3981]
User ID: 501

Date/Time: 2020-07-24 02:29:23.043 +0100
OS Version: Mac OS X 10.12.6 (16G2136)
Report Version: 12
Anonymous UUID: 30AC8868-4338-0A55-D885-9A02E0D66F4C

Sleep/Wake UUID: E97F21D9-1FDC-4D34-99CA-0CC8E45698F1

Time Awake Since Boot: 140000 seconds
Time Since Wake: 120000 seconds

System Integrity Protection: enabled

Crashed Thread: 0

Exception Type: EXC_CRASH (Code Signature Invalid)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY

Termination Reason: Namespace CODESIGNING, Code 0x1

kernel messages:

VM Regions Near 0 (cr2):
-->
__TEXT 000000010cce6000-000000010ccea000 [ 16K] r-x/r-x SM=COW @
[no.Arduino]

Thread 0 Crashed:
0 d
0x000000010e427000 _dyld_start + 0

Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x0000000000000000 rcx: 0x0000000000000000 rdx: 0x0000000000000000
rdi: 0x0000000000000000 rsi: 0x0000000000000000 rbp: 0x0000000000000000 rsp: 0x00007fff52f19bd8
r8: 0x0000000000000000 r9: 0x0000000000000000 r10: 0x0000000000000000 r11: 0x0000000000000000
r12: 0x0000000000000000 r13: 0x0000000000000000 r14: 0x0000000000000000 r15: 0x0000000000000000
rip: 0x000000010e427000 rfl: 0x0000000000000200 cr2: 0x0000000000000000

Logical CPU: 0
Error Code: 0x00000000
Trap Number: 0

Binary Images:
0x10cce6000 - 0x10cce9ffb +d
(0) d

0x10e426000 - 0x10e463dc7 +d
(434) <33DB4E37-BC29-37A4-92AB-30328E66A8FA> d

External Modification Summary:
Calls made by other processes targeting this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by all processes on this machine:
task_for_pid: 80812
thread_create: 0
thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=376K resident=0K(0%) swapped_out_or_unallocated=376K(100%)
Writable regions: Total=8400K written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=8400K(100%)

VIRTUAL REGION
REGION TYPE SIZE COUNT (non-coalesced)
=========== ======= =======
STACK GUARD 56.0M 2
Stack 8192K 2
__DATA 224K 4
__LINKEDIT 112K 3
__TEXT 264K 3
shared memory 8K 3
=========== ======= =======
TOTAL 64.6M 11

Model: MacBookPro13,2, BootROM 259.71.1.0.0, 2 processors, Intel Core i5, 2.9 GHz, 8 GB, SMC 2.37f20
Graphics: Intel Iris Graphics 550, Intel Iris Graphics 550, Built-In
Memory Module: BANK 0/DIMM0, 4 GB, LPDDR3, 2133 MHz, 0x80CE, 0x4B3445364533303445422D45474347202020
Memory Module: BANK 1/DIMM0, 4 GB, LPDDR3, 2133 MHz, 0x80CE, 0x4B3445364533303445422D45474347202020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x157), Broadcom BCM43xx 1.0 (7.21.171.134.1a2)
Bluetooth: Version 5.0.5f7, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
USB Device: USB 3.0 Bus
USB Device: iBridge
Thunderbolt Bus: MacBook Pro, Apple Inc., 22.1
Thunderbolt Bus: MacBook Pro, Apple Inc., 22.1

i think i may have deleted Appdata 15 folder