Faceing same error. Some time it works and some time it doesn't. Simple unmount starts working for some time. Cand write files.

Too many issues on this app. Sent multiple screenshots using bug report tool. No progress except confirmation email.

Had similar issues today. SE kept saying "The directory you have selected is invalid" when trying to grant access to SD card. Couldnt create or delete folders. Same issue on two different SD cards. SOLVED all my issues by uninstalling and reinstalling Solid Explorer.

Wow, it just got fixed. That was fast. :D Thank you!

Same problem. Worked yesterday, I had to clear the cache for some reason, and after clearing the cache it tells me "incorrect folder". Yeah, right. You know what's funny? Clicking internal storage works. So, probably, deleting SD/notes.txt will delete Internal/notes.txt.

I used VLC to delete the files.

Jason Cliche thanks for the tip

It's because Documents app in your phone is Disabled/Frozen by you or by the system itself. Kindly enable it in Settings app and you will be able to use sdcard. I am on MIUI.

no access to sd card anymore, paid version, total waste of time anybody knows of other apps that work? these people have obviously screwed up the app and are no longer competent to fix it

The following worked for me:
https://neatbytes.com/solidexplorer/index.php/solid-explorer-faq/
that is, when granting access to the SD via dialog, make sure you select SD card's *root*, not its folder or subfolder.

After going around in a loop I figured it out. Tap grant... Now You need to close app.. Not leave and return.. Close.... Turn phone off if you don't know how to close app.. It will work next time you try.... Did for me

I'm stuck in a loop of granting access. I cannot do anything but read on my SD. No matter how many times I grant, show SD, select root folder, it still won't let me managed files on my SD. I also paid for this app, and am regretting it already.

Package Disabler Pro - which had com.android.externalstorage disabled was the problem for me also. Thanks Jason Cliche for posting that.

Ah ha!

I'm using Package Disabler Pro - which had com.android.externalstorage disabled. Re-enabled, rebooted. It works now. Your mileage may vary.

What worked for me in Android 5.0.2 is the following:

With SE edit platform.xml in /system/etc/permissions/ to:

<permission name="android.permission.READ_EXTERNAL_STORAGE" >
<group gid="sdcard_r" />
</permission>

<permission name="android.permission.WRITE_EXTERNAL_STORAGE" >
<group gid="sdcard_r" />
<group gid="sdcard_rw" />
<group gid="media_rw" />
</permission>

<permission name="android.permission.ACCESS_ALL_EXTERNAL_STORAGE" >
<group gid="sdcard_r" />
<group gid="sdcard_rw" />
<group gid="sdcard_all" />
</permission>

It also helped with Titanium Backup sdcard r/w issues.

Same problem here. Get asked to grant rights to the sd card but on next screen there are no drives to select only a recent history option which does nothing. I saw another comment saying it was easy but it may differ on some phones. Definitely not working on mine.

I have a galaxy s6 with the paid version of Solid Explorer. When I try to delete or move a file it puts it in the Queue but nothing happens. What is the Queue and how do I move or delete files in Solid Explorer?

I'm using Solid Explorer 2.1.18 (paid), SuperSU 2.76 (free) and Flyme OS 4.5.4.2A (Android 5.1, Meizu m2).

There's no way to write on a SD card, even following instructions.
They were probably written for Solid Explorer 1 and never updated...

I have the paid version. Copy and paste from one-pane configurations and permissions are buggy. And it's NOT an android issue!.. I have another app (free) which handles these operations. I posted earlier.

How are the tasks (copying tfrom internal to the external USB) in the queue completed. Thanks.

PS. I have the paid version

Have you tried it?
Tap "grant" and the rest of the instructions then become obvious. It took me 10 seconds once I realised to tap "grant" first.