Hammer Editor: Out of Solid Loading Memory (several parts of map gone)

[ADudeWithAHat]

So I had this problem and several parts of my map were gone.

This is the error message/line it gave and I tried to get rid of it and then just finish off the line but it doesn't make a difference with the stuff that disappeared.
[url]http://puu.sh/mnytl/74a9aa2402.png[/url]

Here's the actual part from the error message/line.

hidden
{
	entity
	{
		"id" "10507"
		"classname" "func_detail"
		hidden
		{
			solid
			{
				"id" "10508"
				side
				{
					"id" "39138"
					"plane" "(1344 -4624 791.992) (1344 -4624 656) (1344 -4620 656)"
					"material" "METAL/CITADEL_METALWALL077A"
					"uaxis" "[0 1 0 64] 0.25"
					"vaxis" "[0 0 -1 -372.706] 0.283333"
					"rotation" "0"
					"lightmapscale" "16"
					"smoothing_groups" "0"
				}
				side
				{
					"id" "39139"
					"plane" "(1536 -4620 656) (1536 -4624 656) (1536 -4624 791.992)"
					"material" "METAL/METALPIPE001A"
					"uaxis" "[0 1 0 0] 0.25"
					"vaxis" "[0 0 -1 0] 0.25"
					"rotation" "0"
					"lightmapscale" "16"
					"smoothing_groups" "0"
				}
				side
				{
					"id" "39140"
					"plane" "(1536 -4624 791.992) (1344 -4624 656) (1344 -4624 791.992)"
					"material" "METAL/CITADEL_METALWALL077A"
					"uaxis" "[1 0 0 0] 0.25"
					"vaxis" "[0 0 -1 -372.706] 0.283333"
					"rotation" "0"
					"lightmapscale" "16"
					"smoothing_groups" "0"
				}
				side
				{
					"id" "39141"
					"plane" "(1344 -4620 656) (1344 -4624 656) (1536 -4624 656)"
					"material" "METAL/CITADEL_METALWALL077A"
					"uaxis" "[1 0 0 0] 0.25"
					"vaxis" "[0 -1 0 -64] 0.25"
					"rotation" "0"
					"lightmapscale" "16"
					"smoothing_groups" "0"
				}
				side
				{
					"id" "39142"
					"plane" "(1344 -4624 792.016) (1344 -4620 656) (1536 -4620 656)"
					"material" "METAL/CITADEL_METAL[b][INSERT 10000000 NULS HERE][/b]

[Zolofto]

you have autosave or any old saves of your map? looks like this is a rough sail down shit creek.

[editline]8th January 2016[/editline]

If the VMF dies right there, and theres no more text or NUL objects, the vmf is corrupted. Sadly, this happens. Save often, backup just as often.

[ADudeWithAHat]

[QUOTE=Richard Simmons;49482667]you have autosave or any old saves of your map? looks like this is a rough sail down shit creek.

[editline]8th January 2016[/editline]

If the VMF dies right there, and theres no more text or NUL objects, the vmf is corrupted. Sadly, this happens. Save often, backup just as often.[/QUOTE]

Luckily Windows decided to save an older version of it and I was able to recover it, thanks anyway.