adamreznicek1992 on "[Plugin: NextGEN Gallery] Upload photos - thumbnail/metadata issue"

Hi,

actualy I'm running on the latest WordPress (4.5.3) and nggallery (2.1.46) versions, but if i want to create new gallery, some photos not be uploaded properly.
In the images list can be show only the blank thumbnail like this:
Screenshot here

If I click on the blank thumbnail the full image version will be display as a normal...
But... If I add gallery to some page or post, page cannot be render cause gallery issue (thumbnails).
Problem is there few months at least.

Any ideas?
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Operating System : Linux (64 Bit)
Server : Apache
Memory usage : 11.69MByte
MYSQL Version : 5.6.23
SQL Mode : NO_ENGINE_SUBSTITUTION
PHP Version : 7.0.6
PHP Safe Mode : Off
PHP Allow URL fopen : On
PHP Memory Limit : 128M
PHP Max Upload Size : 32M
PHP Max Post Size : 32M
PHP Max Script Execute Time : 90s
PHP Exif support : Yes ( V1.4 )
PHP IPTC support : Yes
PHP XML support : Yes

GD Version : bundled (2.1.0 compatible)
FreeType Support : Yes
FreeType Linkage : with freetype
GIF Read Support : Yes
GIF Create Support : Yes
JPEG Support : Yes
PNG Support : Yes
WBMP Support : Yes
XPM Support : No
XBM Support : Yes
WebP Support : No
JIS-mapped Japanese Font Support : No

https://wordpress.org/plugins/nextgen-gallery/