You need to wait little bit more. Actually “saved” means only that draft of your post was saved…
Don’t hit reply until “Uploading…” is replaced by actual <img> tag.
If you have troubles uploading more images at once, try to upload them one by one.
It also can be issue of image size - then try to resize image to lower resolution before uploading.
For resizing (making image smaller) you can use free utilities:
- Irfanview for Windows