Hi.

I formatted my dev machine. Clean windows setup (20H2 build 19042.870).

The first DF I tried to install was DF 20, e official release (20.0.6.130). I have not tried to install previous versions yet, like 19.x , 18.x

Observations:

During installation, the wizard never asked me to register my license...
It reached the final "Complete" page, without any reported issue during the install.
at this final page, the Check box to Start DF Studio as checked/enabled.
When I clicked the "Finish" button, Studio did not started, but instead a window box asking me to choose a program to open a file.
(like when you double click a file that has no association default program) .

If I try to open Studio manually, nothing happens as well. But on windows event-viewer I get these 2 app crash errors:

Code:
Faulting application name: Studio.exe, version: 20.0.6.130, time stamp: 0x603f94a3
Faulting module name: icuuc63.dll, version: 63.2.0.0, time stamp: 0x603f9274
Exception code: 0xc0000005
Fault offset: 0x00000000000cfa7e
Faulting process id: 0x358c
Faulting application start time: 0x01d7231086201b43
Faulting application path: C:\Program Files\DataFlex 20.0\Bin64\Studio.exe
Faulting module path: C:\Program Files\DataFlex 20.0\Bin64\icuuc63.dll
Report Id: cf844080-e8a2-47da-9bcd-a98bac42d6a0
Faulting package full name: 
Faulting package-relative application ID:
followed by

Code:
Fault bucket 2001750163471798647, type 4Event Name: APPCRASH
Response: Not available
Cab Id: 0


Problem signature:
P1: Studio.exe
P2: 20.0.6.130
P3: 603f94a3
P4: icuuc63.dll
P5: 63.2.0.0
P6: 603f9274
P7: c0000005
P8: 00000000000cfa7e
P9: 
P10: 


Attached files:
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER4771.tmp.dmp
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER47C0.tmp.WERInternalMetadata.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER47E0.tmp.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER47E2.tmp.csv
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER4803.tmp.txt


These files may be available here:
\\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_Studio.exe_b22ec2db164e626e4f5bbc7e7a8ee142ef116b0_0961ec82_b8874992-1b39-4a26-9665-97c4a16d759f


Analysis symbol: 
Rechecking for solution: 0
Report Id: cf844080-e8a2-47da-9bcd-a98bac42d6a0
Report Status: 268435456
Hashed bucket: c76fc25880425b212bc7a52afed11177
Cab Guid: 0
..

And the webOrder webapp is also failing to start, crashing as well in the ICU library.

Code:
Faulting application name: WebApp.exe, version: 20.0.1.0, time stamp: 0x603f94a3
Faulting module name: icuuc63.dll, version: 63.2.0.0, time stamp: 0x603f9274
Exception code: 0xc0000005
Fault offset: 0x00000000000cfa7e
Faulting process id: 0x3444
Faulting application start time: 0x01d72310576326f4
Faulting application path: D:\DataFlex 20.0 Examples\WebOrderMobile\Programs\WebApp.exe
Faulting module path: C:\Program Files\DataFlex 20.0\Bin64\icuuc63.dll
Report Id: 5c5a655e-2d7a-491e-801b-fcdbdbc0104d
Faulting package full name: 
Faulting package-relative application ID:
So, it seems some pre-requirement for the icu lib to work proper is missing somewhere as this is a fresh windows setup.
Question is, what would be, and why this pre-req for icu lib to work is not checked/validated or even incorporated as part of the installation ?

I have tried the installation 3 times, (with proper uninstalling and rebooting between them) but same result every time!

Need DAW assistance on this.

Regards